Exam question 1 · Compasses and the magnetic Earth

Identify the origin of the magnetic field of the Earth.

Mova's choice: option 1 · The right answer: option 2 · wrong ✗ · Who acts: you · What happens: identify · To what, where: origin

This is exam question 1 of lesson 30 «Compasses and the magnetic Earth» 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	Identify	identify	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	3 origin	det
3	origin	origin	NOUN	Number=Sing	1 Identify	obj
4	of	of	ADP	_	7 field	case
5	the	the	DET	Definite=Def PronType=Art	7 field	det
6	magnetic	magnetic	ADJ	Degree=Pos	7 field	amod
7	field	field	NOUN	Number=Sing	3 origin	nmod
8	of	of	ADP	_	10 Earth	case
9	the	the	DET	Definite=Def PronType=Art	10 Earth	det
10	Earth	Earth	PROPN	Number=Sing	7 field	nmod
11	.	.	PUNCT	_	1 Identify	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	identify	imperative	you not said here	the origin of the magnetic field of the Earth					vn characterize-29.2-1-1 «NP V NP S_ING»: agent=Agent origin=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 gravitational attraction of the Moon

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 attraction	det
2	gravitational	gravitational	ADJ	Degree=Pos	3 attraction	amod
3	attraction	attraction	NOUN	Number=Sing	root	root
4	of	of	ADP	_	6 Moon	case
5	the	the	DET	Definite=Def PronType=Art	6 Moon	det
6	Moon	Moon	PROPN	Number=Sing	3 attraction	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	attract			the Moon					nom attraction «phenomenon transitive»: of=patient

Option 2 · ✓ the right answer

The motion of molten iron within the outer core

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 motion	det
2	motion	motion	NOUN	Number=Sing	root	root
3	of	of	ADP	_	5 iron	case
4	molten	molten	ADJ	Degree=Pos	5 iron	amod
5	iron	iron	NOUN	Number=Sing	2 motion	nmod
6	within	within	ADP	_	9 core	case
7	the	the	DET	Definite=Def PronType=Art	9 core	det
8	outer	outer	ADJ	Degree=Pos	9 core	amod
9	core	core	NOUN	Number=Sing	2 motion	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	motion		molten iron					within the outer core	nom motion «communication intransitive»: of=agent within=obl

Option 3

A permanent bar magnet situated at the North Pole

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	A	a	DET	Definite=Ind PronType=Art	4 magnet	det
2	permanent	permanent	ADJ	Degree=Pos	4 magnet	amod
3	bar	bar	NOUN	Number=Sing	4 magnet	compound
4	magnet	magnet	NOUN	Number=Sing	root	root
5	situated	situate	VERB	Tense=Past VerbForm=Part Voice=Pass	4 magnet	acl
6	at	at	ADP	_	9 Pole	case
7	the	the	DET	Definite=Def PronType=Art	9 Pole	det
8	North	North	PROPN	Number=Sing	9 Pole	compound
9	Pole	Pole	PROPN	Number=Sing	5 situated	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	situate	participle		a permanent bar magnet not said here		the North Pole			vn put-9.1 «NP V NP PP.destination»: agent=Agent at pole=Destination

Option 4

The accumulation of ice at the polar regions

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 accumulation	det
2	accumulation	accumulation	NOUN	Number=Sing	root	root
3	of	of	ADP	_	4 ice	case
4	ice	ice	NOUN	Number=Sing	2 accumulation	nmod
5	at	at	ADP	_	8 regions	case
6	the	the	DET	Definite=Def PronType=Art	8 regions	det
7	polar	polar	ADJ	Degree=Pos	8 regions	amod
8	regions	region	NOUN	Number=Plur	2 accumulation	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	accumulate			ice		the polar regions			nom accumulation «process transitive»: of=patient at=place

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/30-compasses-and-the-magnetic-earth/e1/