Exam question 3 · Olympiad: kitchen chemistry puzzles ★★★
Red cabbage indicator turns blue-green upon the addition of a substance. Ascertain the substance.
Mova's choice: option 1 · The right answer: option 2 · wrong ✗ · Who acts: Red cabbage indicator, you · What happens: turn, ascertain · To what, where: addition, substance
This is exam question 3 of lesson 36 «Olympiad: kitchen chemistry puzzles ★★★» 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: Red cabbage indicator turns blue-green upon the addition of a substance.
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Red | red | ADJ | Degree=Pos | 3 indicator | amod |
| 2 | cabbage | cabbage | NOUN | Number=Sing | 3 indicator | compound |
| 3 | indicator | indicator | NOUN | Number=Sing | 4 turns | nsubj |
| 4 | turns | turn | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 5 | blue | blue | ADJ | Degree=Pos | 7 green | amod |
| 6 | - | - | PUNCT | _ | 5 blue | punct |
| 7 | green | green | ADJ | Degree=Pos | 4 turns | xcomp |
| 8 | upon | upon | ADP | _ | 10 addition | case |
| 9 | the | the | DET | Definite=Def PronType=Art | 10 addition | det |
| 10 | addition | addition | NOUN | Number=Sing | 4 turns | obl |
| 11 | of | of | ADP | _ | 13 substance | case |
| 12 | a | a | DET | Definite=Ind PronType=Art | 13 substance | det |
| 13 | substance | substance | NOUN | Number=Sing | 10 addition | nmod |
| 14 | . | . | PUNCT | _ | 4 turns | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | turn | present | Red cabbage indicator | the addition of a substance | green property | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme upon addition=Trajectory |
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 substance.
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 | 3 substance | det |
| 3 | substance | substance | NOUN | Number=Sing | 1 Ascertain | obj |
| 4 | . | . | 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 substance | vn discover-84 «NP V NP»: agent=Agent substance=Topic |
The options
Option 1 · ← Mova's choice
White wine vinegar
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | White | white | ADJ | Degree=Pos | 3 vinegar | amod |
| 2 | wine | wine | NOUN | Number=Sing | 3 vinegar | compound |
| 3 | vinegar | vinegar | NOUN | Number=Sing | root | root |
The frames reader finds no event or fact in this sentence.
Option 2 · ✓ the right answer
Baking soda dissolved in water
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Baking | baking | NOUN | Number=Sing | 2 soda | compound |
| 2 | soda | soda | NOUN | Number=Sing | root | root |
| 3 | dissolved | dissolve | VERB | Tense=Past VerbForm=Part Voice=Pass | 2 soda | acl |
| 4 | in | in | ADP | _ | 5 water | case |
| 5 | water | water | NOUN | Number=Sing | 3 dissolved | obl |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | dissolve | participle | Baking soda not said here | water | vn break-45.1 «NP.patient V»: agent=Patient |
Option 3
Lemon juice
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Lemon | lemon | NOUN | Number=Sing | 2 juice | compound |
| 2 | juice | juice | NOUN | Number=Sing | root | root |
The frames reader finds no event or fact in this sentence.
Option 4
Plain tap water with nothing added
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Plain | plain | ADJ | Degree=Pos | 3 water | amod |
| 2 | tap | tap | NOUN | Number=Sing | 3 water | compound |
| 3 | water | water | NOUN | Number=Sing | root | root |
| 4 | with | with | ADP | _ | 5 nothing | case |
| 5 | nothing | nothing | PRON | Number=Sing PronType=Neg | 3 water | nmod |
| 6 | added | add | VERB | Tense=Past VerbForm=Part Voice=Pass | 3 water | acl |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | add speech: assert | participle | Plain tap water with nothing not said here | vn mix-22.1-2 «NP V ADVP-Middle»: agent=Patient |
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/36-olympiad-kitchen-chemistry-puzzles/e3/