Exam question 2 · The fizz: vinegar, lemon and soda
It is given that a closed vessel contains reacting substances which produce gas. Ascertain the principal hazard.
Mova's choice: option 3 · The right answer: option 4 · wrong ✗ · Who acts: closed vessel, substances, you · What happens: give, close, contain, react, produce, ascertain · To what, where: It, substances, gas, principal hazard
This is exam question 2 of lesson 18 «The fizz: vinegar, lemon and soda» of the chemistry course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: the test at school.
The question
Sentence 1: It is given that a closed vessel contains reacting substances which produce gas.
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | It | it | PRON | Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs | 3 given | nsubj:pass |
| 2 | is | be | AUX | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 3 given | aux:pass |
| 3 | given | give | VERB | Tense=Past VerbForm=Part Voice=Pass | root | root |
| 4 | that | that | SCONJ | _ | 8 contains | mark |
| 5 | a | a | DET | Definite=Ind PronType=Art | 7 vessel | det |
| 6 | closed | close | VERB | Tense=Past VerbForm=Part Voice=Pass | 7 vessel | amod |
| 7 | vessel | vessel | NOUN | Number=Sing | 8 contains | nsubj |
| 8 | contains | contain | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 3 given | advcl |
| 9 | reacting | react | VERB | VerbForm=Ger | 8 contains | xcomp |
| 10 | substances | substance | NOUN | Number=Plur | 9 reacting | obj |
| 11 | which | which | PRON | PronType=Rel | 12 produce | nsubj |
| 12 | produce | produce | VERB | Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin | 10 substances | acl:relcl |
| 13 | gas | gas | NOUN | Number=Sing | 12 produce | obj |
| 14 | . | . | PUNCT | _ | 3 given | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | give | present · passive | It | vn give-13.1-1 «NP V NP»: subject=Theme | |||||
| 2 | close | participle | vn other_cos-45.4 «NP.patient V»: agent=Patient | ||||||
| 3 | contain | present | a closed vessel | tree rules | |||||
| 4 | react | gerund | a closed vessel not said here | substances | tree rules | ||||
| 5 | produce | present | substances | gas | vn create-26.4 «NP V NP»: agent=Agent gas=Result |
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.
Sentence 2: Ascertain the principal hazard.
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Ascertain | ascertain | VERB | Mood=Imp VerbForm=Fin | root | root |
| 2 | the | the | DET | Definite=Def PronType=Art | 4 hazard | det |
| 3 | principal | principal | ADJ | Degree=Pos | 4 hazard | amod |
| 4 | hazard | hazard | NOUN | Number=Sing | 1 Ascertain | obj |
| 5 | . | . | PUNCT | _ | 1 Ascertain | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ascertain | imperative | you not said here | the principal hazard | vn discover-84 «NP V NP»: agent=Agent hazard=Topic |
The options
Option 1
The vessel may become strongly and permanently magnetised
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 vessel | det |
| 2 | vessel | vessel | NOUN | Number=Sing | 4 become | nsubj |
| 3 | may | may | AUX | VerbForm=Fin | 4 become | aux |
| 4 | become | become | VERB | VerbForm=Inf | root | root |
| 5 | strongly | strongly | ADV | _ | 4 become | advmod |
| 6 | and | and | CCONJ | _ | 8 magnetised | cc |
| 7 | permanently | permanently | ADV | _ | 8 magnetised | advmod |
| 8 | magnetised | magnetise | VERB | Tense=Past VerbForm=Part Voice=Pass | 4 become | conj |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | become | may | the vessel | strongly property | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient | ||||
| 2 | magnetise | participle | the vessel not said here | permanently property | tree rules |
Option 2
The vessel will become permanently cold
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 vessel | det |
| 2 | vessel | vessel | NOUN | Number=Sing | 4 become | nsubj |
| 3 | will | will | AUX | VerbForm=Fin | 4 become | aux |
| 4 | become | become | VERB | VerbForm=Inf | root | root |
| 5 | permanently | permanently | ADV | _ | 6 cold | advmod |
| 6 | cold | cold | ADJ | Degree=Pos | 4 become | xcomp |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | become | future | the vessel | cold property | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |
Option 3 · ← Mova's choice
The substances may turn into solid metal
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 substances | det |
| 2 | substances | substance | NOUN | Number=Plur | 4 turn | nsubj |
| 3 | may | may | AUX | VerbForm=Fin | 4 turn | aux |
| 4 | turn | turn | VERB | VerbForm=Inf | root | root |
| 5 | into | into | ADP | _ | 7 metal | case |
| 6 | solid | solid | ADJ | Degree=Pos | 7 metal | amod |
| 7 | metal | metal | NOUN | Number=Sing | 4 turn | obl |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | turn | may | the substances | solid metal | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme into metal=Trajectory |
Option 4 · ✓ the right answer
The pressure may rise until the vessel bursts
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 pressure | det |
| 2 | pressure | pressure | NOUN | Number=Sing | 4 rise | nsubj |
| 3 | may | may | AUX | VerbForm=Fin | 4 rise | aux |
| 4 | rise | rise | VERB | VerbForm=Inf | root | root |
| 5 | until | until | SCONJ | _ | 8 bursts | mark |
| 6 | the | the | DET | Definite=Def PronType=Art | 7 vessel | det |
| 7 | vessel | vessel | NOUN | Number=Sing | 8 bursts | nsubj |
| 8 | bursts | burst | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 4 rise | advcl |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | rise | may | the pressure | vn assuming_position-50 «NP V»: agent=Agent | |||||
| 2 | burst | present | the vessel | vn appear-48.1.1 «NP V»: agent=Theme |
Text: the tests of Mova's primary school, written for Mova (world/data/school/), as the course runner gave them to the student. Trees: Mova's own parse — the en model on the CPU, when the site is built — not checked by a teacher; they may be wrong. Frames: Mova's frames reader (prag), each text read on its own. Elamur Cosmic License.
This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/18-the-fizz-vinegar-lemon-and-soda/e2/