Exam question 3 · Gases all around: breath and balloons

Which of the following statements most accurately characterises carbon monoxide?

Mova's choice: option 2 · The right answer: option 2 · right ✓ · What happens: follow, characteris · To what, where: carbon monoxide

This is exam question 3 of lesson 20 «Gases all around: breath and balloons» of the chemistry 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	Which	which	PRON	PronType=Rel	8 characterises	nsubj
2	of	of	ADP	_	5 statements	case
3	the	the	DET	Definite=Def PronType=Art	5 statements	det
4	following	follow	VERB	VerbForm=Ger	5 statements	amod
5	statements	statement	NOUN	Number=Plur	8 characterises	obl
6	most	most	ADV	Degree=Sup	7 accurately	advmod
7	accurately	accurately	ADV	_	8 characterises	advmod
8	characterises	characteris	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
9	carbon	carbon	NOUN	Number=Sing	10 monoxide	compound
10	monoxide	monoxide	NOUN	Number=Sing	8 characterises	obj
11	?	?	PUNCT	_	8 characterises	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	follow	gerund							vn occur-48.3-1 «NP V»: agent=Theme
2	characteris	present		carbon monoxide				of the following statements; accurately property	tree rules

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

It possesses a strong odour of rotten eggs

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	2 possesses	nsubj
2	possesses	possess	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	a	a	DET	Definite=Ind PronType=Art	5 odour	det
4	strong	strong	ADJ	Degree=Pos	5 odour	amod
5	odour	odour	NOUN	Number=Sing	2 possesses	obj
6	of	of	ADP	_	8 eggs	case
7	rotten	rotten	ADJ	Degree=Pos	8 eggs	amod
8	eggs	egg	NOUN	Number=Plur	5 odour	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	possess	present	It	a strong odour of rotten eggs					vn own-100.1 «NP V NP»: agent=Pivot odour=Theme

Option 2 · ← Mova's choice · ✓ the right answer

It is odourless and can prove fatal

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	3 odourless	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 odourless	cop
3	odourless	odourless	ADJ	Degree=Pos	root	root
4	and	and	CCONJ	_	6 prove	cc
5	can	can	AUX	VerbForm=Fin	6 prove	aux
6	prove	prove	VERB	VerbForm=Inf	3 odourless	conj
7	fatal	fatal	ADJ	Degree=Pos	6 prove	xcomp

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					odourless property	tree rules
2	prove	can						fatal property	vn declare-29.4-1-1 «NP V what S_INF»: agent=Agent

Option 3

It is visible as a white cloud

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	3 visible	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 visible	cop
3	visible	visible	ADJ	Degree=Pos	root	root
4	as	as	ADP	_	7 cloud	case
5	a	a	DET	Definite=Ind PronType=Art	7 cloud	det
6	white	white	ADJ	Degree=Pos	7 cloud	amod
7	cloud	cloud	NOUN	Number=Sing	3 visible	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					as a white cloud; visible property	tree rules

Option 4

It is entirely harmless in enclosed spaces

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	4 harmless	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 harmless	cop
3	entirely	entirely	ADV	_	4 harmless	advmod
4	harmless	harmless	ADJ	Degree=Pos	root	root
5	in	in	ADP	_	7 spaces	case
6	enclosed	enclose	VERB	Tense=Past VerbForm=Part Voice=Pass	7 spaces	amod
7	spaces	space	NOUN	Number=Plur	4 harmless	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It			enclosed spaces		entirely, harmless property	tree rules
2	enclose	participle							vn contiguous_location-47.8 «NP V NP»: agent=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.

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