Exam question 4 · Compasses and the magnetic Earth

Select the response consistent with the established facts concerning the aurora.

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · Who acts: you, established facts · What happens: select, establish, concern · To what, where: response, aurora

This is exam question 4 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	Select	select	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	3 response	det
3	response	response	NOUN	Number=Sing	1 Select	obj
4	consistent	consistent	ADJ	Degree=Pos	1 Select	xcomp
5	with	with	ADP	_	8 facts	case
6	the	the	DET	Definite=Def PronType=Art	8 facts	det
7	established	establish	VERB	Tense=Past VerbForm=Part Voice=Pass	8 facts	amod
8	facts	fact	NOUN	Number=Plur	4 consistent	obl
9	concerning	concern	VERB	VerbForm=Ger	8 facts	acl
10	the	the	DET	Definite=Def PronType=Art	11 aurora	det
11	aurora	aurora	NOUN	Number=Sing	9 concerning	obj
12	.	.	PUNCT	_	1 Select	punct

#	verb	tense, mood	who	what, whom	other	roles by
1	select	imperative	you not said here	the response	consistent property	vn obtain-13.5.2 «NP V NP»: agent=Agent response=Theme
2	establish	participle				vn indicate-78-1-1 «NP V NP to be NP»: agent=Pivot
3	concern	gerund	the established facts not said here	the aurora		vn amuse-31.1 «NP V NP»: agent=Stimulus aurora=Experiencer

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

Distant lightning illuminates the night sky

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Distant	distant	ADJ	Degree=Pos	2 lightning	amod
2	lightning	lightning	NOUN	Number=Sing	3 illuminates	nsubj
3	illuminates	illuminate	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	the	the	DET	Definite=Def PronType=Art	6 sky	det
5	night	night	NOUN	Number=Sing	6 sky	compound
6	sky	sky	NOUN	Number=Sing	3 illuminates	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	illuminate	present	Distant lightning	the night sky					vn illustrate-25.3 «NP V NP»: agent=Agent sky=Destination

Option 2

Moonlight is reflected from the polar ice upon the clouds

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Moonlight	moonlight	NOUN	Number=Sing	3 reflected	nsubj:pass
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 reflected	aux:pass
3	reflected	reflect	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
4	from	from	ADP	_	7 ice	case
5	the	the	DET	Definite=Def PronType=Art	7 ice	det
6	polar	polar	ADJ	Degree=Pos	7 ice	amod
7	ice	ice	NOUN	Number=Sing	3 reflected	obl
8	upon	upon	ADP	_	10 clouds	case
9	the	the	DET	Definite=Def PronType=Art	10 clouds	det
10	clouds	cloud	NOUN	Number=Plur	3 reflected	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	reflect	present · passive		Moonlight		the polar ice		upon the clouds	tree rules

Option 3 · ✓ the right answer

Charged particles from the Sun are guided towards the poles and cause the upper air to glow

The tree, 17 words

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Charged	charge	VERB	Tense=Past VerbForm=Part Voice=Pass	2 particles	amod
2	particles	particle	NOUN	Number=Plur	7 guided	nsubj:pass
3	from	from	ADP	_	5 Sun	case
4	the	the	DET	Definite=Def PronType=Art	5 Sun	det
5	Sun	Sun	PROPN	Number=Sing	2 particles	nmod
6	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	7 guided	aux:pass
7	guided	guide	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
8	towards	towards	ADP	_	10 poles	case
9	the	the	DET	Definite=Def PronType=Art	10 poles	det
10	poles	pole	NOUN	Number=Plur	7 guided	obl
11	and	and	CCONJ	_	12 cause	cc
12	cause	cause	VERB	VerbForm=Inf	7 guided	conj
13	the	the	DET	Definite=Def PronType=Art	15 air	det
14	upper	upper	ADJ	Degree=Pos	15 air	amod
15	air	air	NOUN	Number=Sing	12 cause	obj
16	to	to	PART	_	17 glow	mark
17	glow	glow	VERB	VerbForm=Inf	15 air	acl

#	verb	tense, mood	what, whom	where	roles by
1	charge	participle			vn run-51.3.2 «NP V»: agent=Theme
2	guide	present · passive	Charged particles from the Sun	the poles	vn accompany-51.7 «NP V NP PP.destination»: subject=Theme towards pole=Destination
3	cause	infinitive	the upper air		vn engender-27.1-1 «NP V NP»: agent=Precondition air=Patient
4	glow	to-infinitive	the upper air not said here		vn light_emission-43.1 «NP V»: agent=Theme

Option 4

The cold polar air emits light of its own accord

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	4 air	det
2	cold	cold	ADJ	Degree=Pos	4 air	amod
3	polar	polar	ADJ	Degree=Pos	4 air	amod
4	air	air	NOUN	Number=Sing	5 emits	nsubj
5	emits	emit	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
6	light	light	NOUN	Number=Sing	5 emits	obj
7	of	of	ADP	_	10 accord	case
8	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	10 accord	nmod:poss
9	own	own	ADJ	Degree=Pos	10 accord	amod
10	accord	accord	NOUN	Number=Sing	6 light	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	emit	present	the cold polar air	light of air's own accord					vn substance_emission-43.4 «NP V NP»: agent=Source light=Theme
2	light			air's own accord					nom light «phenomenon transitive»: of=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/physics/30-compasses-and-the-magnetic-earth/e4/