Test 9 · ★ · Magnets
Why can a crane drop scrap metal with an electromagnet but not with a bar magnet?
Mova's choice: option 3 · The right answer: option 1 · wrong ✗
This is test 9 · ★ of lesson 81 «Magnets» of the world course of Mova's primary school. 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
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Why | why | ADV | PronType=Int | 7 metal | advmod |
| 2 | can | can | AUX | VerbForm=Fin | 7 metal | aux |
| 3 | a | a | DET | Definite=Ind PronType=Art | 7 metal | det |
| 4 | crane | crane | NOUN | Number=Sing | 5 drop | compound |
| 5 | drop | drop | NOUN | Number=Sing | 6 scrap | compound |
| 6 | scrap | scrap | NOUN | Number=Sing | 7 metal | compound |
| 7 | metal | metal | NOUN | Number=Sing | root | root |
| 8 | with | with | ADP | _ | 10 electromagnet | case |
| 9 | an | a | DET | Definite=Ind PronType=Art | 10 electromagnet | det |
| 10 | electromagnet | electromagnet | NOUN | Number=Sing | 7 metal | nmod |
| 11 | but | but | CCONJ | _ | 16 magnet | cc |
| 12 | not | not | PART | Polarity=Neg | 16 magnet | advmod |
| 13 | with | with | ADP | _ | 16 magnet | case |
| 14 | a | a | DET | Definite=Ind PronType=Art | 16 magnet | det |
| 15 | bar | bar | NOUN | Number=Sing | 16 magnet | compound |
| 16 | magnet | magnet | NOUN | Number=Sing | 10 electromagnet | conj |
| 17 | ? | ? | PUNCT | _ | 7 metal | punct |
The frames reader finds no event or fact in this sentence.
The options
Option 1 · ✓ the right answer
The electromagnet can be switched off
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 electromagnet | det |
| 2 | electromagnet | electromagnet | NOUN | Number=Sing | 5 switched | nsubj:pass |
| 3 | can | can | AUX | VerbForm=Fin | 5 switched | aux |
| 4 | be | be | AUX | VerbForm=Inf | 5 switched | aux:pass |
| 5 | switched | switch | VERB | Tense=Past VerbForm=Part Voice=Pass | root | root |
| 6 | off | off | ADP | _ | 5 switched | compound:prt |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | switch off | can · passive | the electromagnet | vn convert-26.6.2-1-1 «NP V NP»: subject=Patient |
Option 2
The bar magnet is too weak to lift anything
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 3 magnet | det |
| 2 | bar | bar | NOUN | Number=Sing | 3 magnet | compound |
| 3 | magnet | magnet | NOUN | Number=Sing | 6 weak | nsubj |
| 4 | is | be | AUX | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 6 weak | cop |
| 5 | too | too | ADV | _ | 6 weak | advmod |
| 6 | weak | weak | ADJ | Degree=Pos | root | root |
| 7 | to | to | PART | _ | 8 lift | mark |
| 8 | lift | lift | VERB | VerbForm=Inf | 6 weak | advcl |
| 9 | anything | anything | PRON | Number=Sing PronType=Ind | 8 lift | obj |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | is | present | the bar magnet | weak property | tree rules | ||||
| 2 | lift | to-infinitive | the bar magnet not said here | anything | vn put_direction-9.4 «NP V NP»: agent=Agent anything=Theme |
Option 3 · ← Mova's choice
The bar magnet melts the metal
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 3 magnet | det |
| 2 | bar | bar | NOUN | Number=Sing | 3 magnet | compound |
| 3 | magnet | magnet | NOUN | Number=Sing | 4 melts | nsubj |
| 4 | melts | melt | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 5 | the | the | DET | Definite=Def PronType=Art | 6 metal | det |
| 6 | metal | metal | NOUN | Number=Sing | 4 melts | obj |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | melt | present | the bar magnet | the metal | vn other_cos-45.4-1 «NP V NP ADJ»: agent=Patient metal=Result |
Option 4
The electromagnet repels steel
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | The | the | DET | Definite=Def PronType=Art | 2 electromagnet | det |
| 2 | electromagnet | electromagnet | NOUN | Number=Sing | 3 repels | nsubj |
| 3 | repels | repel | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 4 | steel | steel | NOUN | Number=Sing | 3 repels | obj |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | repel | present | the electromagnet | steel | vn amuse-31.1 «NP V NP»: agent=Stimulus steel=Experiencer |
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/world/81-magnets/t9/