Exam question 2 · Magnets: pulling and pushing without touching

Ascertain the consequence of severing a bar magnet transversely into two portions.

Mova's choice: option 1 · The right answer: option 1 · right ✓ · Who acts: you, consequence · What happens: ascertain, sever · To what, where: consequence, bar magnet, two portions

This is exam question 2 of lesson 29 «Magnets: pulling and pushing without touching» of the physics 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

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 consequence	det
3	consequence	consequence	NOUN	Number=Sing	1 Ascertain	obj
4	of	of	SCONJ	_	5 severing	mark
5	severing	sever	VERB	VerbForm=Ger	3 consequence	acl
6	a	a	DET	Definite=Ind PronType=Art	8 magnet	det
7	bar	bar	NOUN	Number=Sing	8 magnet	compound
8	magnet	magnet	NOUN	Number=Sing	5 severing	obj
9	transversely	transversely	ADV	_	5 severing	advmod
10	into	into	ADP	_	12 portions	case
11	two	two	NUM	NumForm=Word NumType=Card	12 portions	nummod
12	portions	portion	NOUN	Number=Plur	5 severing	obl
13	.	.	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 consequence					vn discover-84 «NP V NP»: agent=Agent consequence=Topic
2	sever	gerund	the consequence not said here	a bar magnet		two portions		transversely property	vn remove-10.1 «NP V NP»: agent=Agent magnet=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.

The options

Option 1 · ← Mova's choice · ✓ the right answer

Each portion constitutes a complete magnet possessing both poles

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Each	each	DET	PronType=Tot	2 portion	det
2	portion	portion	NOUN	Number=Sing	3 constitutes	nsubj
3	constitutes	constitute	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	a	a	DET	Definite=Ind PronType=Art	6 magnet	det
5	complete	complete	ADJ	Degree=Pos	6 magnet	amod
6	magnet	magnet	NOUN	Number=Sing	3 constitutes	obj
7	possessing	possess	VERB	VerbForm=Ger	6 magnet	acl
8	both	both	DET	PronType=Tot	9 poles	det
9	poles	pole	NOUN	Number=Plur	7 possessing	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	constitute	present	each portion	a complete magnet					vn comprise-107.2-1 «NP V NP»: agent=Theme magnet=Pivot
2	possess	gerund	a complete magnet not said here	both poles					vn own-100.1 «NP V NP»: agent=Pivot pole=Theme

Option 2

Both portions forfeit their magnetic properties entirely

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Both	both	DET	PronType=Tot	2 portions	det
2	portions	portion	NOUN	Number=Plur	3 forfeit	nsubj
3	forfeit	forfeit	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
4	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	6 properties	nmod:poss
5	magnetic	magnetic	ADJ	Degree=Pos	6 properties	amod
6	properties	property	NOUN	Number=Plur	3 forfeit	obj
7	entirely	entirely	ADV	_	3 forfeit	advmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	forfeit	present	both portions	portions's magnetic properties				entirely property	vn contribute-13.2-1-1 «NP V NP.theme (PP)»: agent=Agent property=Theme

Option 3

One portion possesses solely a north pole and the other a south

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	One	one	NUM	NumForm=Word NumType=Card	2 portion	nummod
2	portion	portion	NOUN	Number=Sing	3 possesses	nsubj
3	possesses	possess	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	solely	solely	ADV	_	7 pole	advmod
5	a	a	DET	Definite=Ind PronType=Art	7 pole	det
6	north	north	NOUN	Number=Sing	7 pole	compound
7	pole	pole	NOUN	Number=Sing	3 possesses	obj
8	and	and	CCONJ	_	12 south	cc
9	the	the	DET	Definite=Def PronType=Art	10 other	det
10	other	other	ADJ	Degree=Pos	12 south	amod
11	a	a	DET	Definite=Ind PronType=Art	12 south	det
12	south	south	NOUN	Number=Sing	7 pole	conj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	possess	present	One portion	a north pole and a other south					vn own-100.1 «NP V NP»: agent=Pivot pole=Theme

Option 4

The magnetism is retained by the larger portion alone

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 magnetism	det
2	magnetism	magnetism	NOUN	Number=Sing	4 retained	nsubj:pass
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 retained	aux:pass
4	retained	retain	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	by	by	ADP	_	8 portion	case
6	the	the	DET	Definite=Def PronType=Art	8 portion	det
7	larger	large	ADJ	Degree=Cmp	8 portion	amod
8	portion	portion	NOUN	Number=Sing	4 retained	obl
9	alone	alone	ADV	_	8 portion	advmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	retain	present · passive	the larger portion	the magnetism					tree rules

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/e2/