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Test 5 · Magnets: pulling and pushing without touching

In a cartoon, a hero uses a huge magnet to pull a gold bar out of a safe. What's wrong?

Mova's choice: option 4 · The right answer: option 4 · right ✓ · Who acts: hero · What happens: use, pull, be · To what, where: huge magnet, cartoon, gold bar

This is test 5 of lesson 29 «Magnets: pulling and pushing without touching» of the physics 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

Sentence 1: In a cartoon, a hero uses a huge magnet to pull a gold bar out of a safe.

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	In	in	ADP	_	3 cartoon	case
2	a	a	DET	Definite=Ind PronType=Art	3 cartoon	det
3	cartoon	cartoon	NOUN	Number=Sing	7 uses	obl
4	,	,	PUNCT	_	3 cartoon	punct
5	a	a	DET	Definite=Ind PronType=Art	6 hero	det
6	hero	hero	NOUN	Number=Sing	7 uses	nsubj
7	uses	use	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
8	a	a	DET	Definite=Ind PronType=Art	10 magnet	det
9	huge	huge	ADJ	Degree=Pos	10 magnet	amod
10	magnet	magnet	NOUN	Number=Sing	7 uses	obj
11	to	to	PART	_	12 pull	mark
12	pull	pull	VERB	VerbForm=Inf	7 uses	advcl
13	a	a	DET	Definite=Ind PronType=Art	15 bar	det
14	gold	gold	NOUN	Number=Sing	15 bar	compound
15	bar	bar	NOUN	Number=Sing	12 pull	obj
16	out	out	ADP	_	19 safe	mark
17	of	of	SCONJ	_	19 safe	mark
18	a	a	DET	Definite=Ind PronType=Art	19 safe	det
19	safe	safe	ADJ	Degree=Pos	12 pull	advcl
20	.	.	PUNCT	_	7 uses	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	use	present	a hero	a huge magnet		a cartoon			vn eat-39.1 «NP V NP»: agent=Agent magnet=Patient
2	pull	to-infinitive	a hero not said here	a gold bar					vn push-12-1 «NP V NP»: agent=Agent bar=Theme

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: What's wrong?

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	What	what	PRON	PronType=Int	3 wrong	nsubj
2	's	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 wrong	cop
3	wrong	wrong	ADJ	Degree=Pos	root	root
4	?	?	PUNCT	_	3 wrong	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present						wrong property	tree rules

The options

Option 1

Magnets cannot work through a safe door

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Magnets	magnet	NOUN	Number=Plur	4 work	nsubj
2	can	can	AUX	VerbForm=Fin	4 work	aux
3	not	not	PART	Polarity=Neg	4 work	advmod
4	work	work	VERB	VerbForm=Inf	root	root
5	through	through	ADP	_	8 door	case
6	a	a	DET	Definite=Ind PronType=Art	8 door	det
7	safe	safe	ADJ	Degree=Pos	8 door	amod
8	door	door	NOUN	Number=Sing	4 work	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	not work	can	Magnets			a safe door			vn employment-95.3 «NP V»: agent=Agent

Option 2

Nothing, gold is strongly magnetic

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Nothing	nothing	PRON	Number=Sing PronType=Neg	3 gold	compound
2	,	,	PUNCT	_	1 Nothing	punct
3	gold	gold	NOUN	Number=Sing	6 magnetic	nsubj
4	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 magnetic	cop
5	strongly	strongly	ADV	_	6 magnetic	advmod
6	magnetic	magnetic	ADJ	Degree=Pos	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	Nothing gold					magnetic, strongly property	tree rules

Option 3

Magnets only work in the dark

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Magnets	magnet	NOUN	Number=Plur	3 work	nsubj
2	only	only	ADV	_	3 work	advmod
3	work	work	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
4	in	in	ADP	_	6 dark	case
5	the	the	DET	Definite=Def PronType=Art	6 dark	det
6	dark	dark	NOUN	Number=Sing	3 work	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	work	present	Magnets					in the dark	vn employment-95.3 «NP V PP.theme»: agent=Agent in dark=Theme

Option 4 · ← Mova's choice · ✓ the right answer

Gold is not pulled by magnets

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Gold	gold	NOUN	Number=Sing	4 pulled	nsubj:pass
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 pulled	aux:pass
3	not	not	PART	Polarity=Neg	4 pulled	advmod
4	pulled	pull	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	by	by	ADP	_	6 magnets	case
6	magnets	magnet	NOUN	Number=Plur	4 pulled	obl:agent

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	not pull	present · passive	magnets	Gold					vn push-12-1 «NP V NP»: agent=Agent subject=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/physics/29-magnets-pulling-and-pushing-without-touching/t5/