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Exam question 4 · Molecules: when atoms join up

It is given that an iron nail is exposed to water and air for several weeks. Ascertain the effect upon its mass.

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · Who acts: you · What happens: give, expose, ascertain · To what, where: It, iron nail, water, effect

This is exam question 4 of lesson 3 «Molecules: when atoms join up» 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

Sentence 1: It is given that an iron nail is exposed to water and air for several weeks.

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 given	nsubj:pass
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 given	aux:pass
3	given	give	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
4	that	that	SCONJ	_	9 exposed	mark
5	an	a	DET	Definite=Ind PronType=Art	7 nail	det
6	iron	iron	NOUN	Number=Sing	7 nail	compound
7	nail	nail	NOUN	Number=Sing	9 exposed	nsubj:pass
8	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	9 exposed	aux:pass
9	exposed	expose	VERB	Tense=Past VerbForm=Part Voice=Pass	3 given	advcl
10	to	to	ADP	_	11 water	case
11	water	water	NOUN	Number=Sing	9 exposed	obl
12	and	and	CCONJ	_	13 air	cc
13	air	air	NOUN	Number=Sing	11 water	conj
14	for	for	ADP	_	16 weeks	case
15	several	several	ADJ	Degree=Pos	16 weeks	amod
16	weeks	week	NOUN	Number=Plur	9 exposed	obl
17	.	.	PUNCT	_	3 given	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	give	present · passive		It					vn give-13.1-1 «NP V NP»: subject=Theme
2	expose	present · passive		a iron nail	water and air		week		vn reflexive_appearance-48.1.2 «NP V NP PP.recipient»: subject=Theme to water=Recipient

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: Ascertain the effect upon its mass.

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 effect	det
3	effect	effect	NOUN	Number=Sing	1 Ascertain	obj
4	upon	upon	ADP	_	6 mass	case
5	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	6 mass	nmod:poss
6	mass	mass	NOUN	Number=Sing	3 effect	nmod
7	.	.	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 effect				upon effect's mass	vn discover-84 «NP V NP»: agent=Agent effect=Topic

The options

Option 1 · ← Mova's choice

The mass decreases to nothing

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 decreases	det
2	mass	mass	ADJ	Degree=Pos	3 decreases	amod
3	decreases	decrease	NOUN	Number=Plur	root	root
4	to	to	ADP	_	5 nothing	case
5	nothing	nothing	PRON	Number=Sing PronType=Neg	3 decreases	nmod

The frames reader finds no event or fact in this sentence.

Option 2

The mass decreases, iron having been destroyed

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 decreases	det
2	mass	mass	ADJ	Degree=Pos	3 decreases	amod
3	decreases	decrease	NOUN	Number=Plur	root	root
4	,	,	PUNCT	_	5 iron	punct
5	iron	iron	NOUN	Number=Sing	3 decreases	appos
6	having	have	VERB	VerbForm=Ger	5 iron	acl
7	been	be	AUX	Tense=Past VerbForm=Part	8 destroyed	aux:pass
8	destroyed	destroy	VERB	Tense=Past VerbForm=Part Voice=Pass	6 having	xcomp

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	have	gerund	iron not said here						tree rules
2	destroy	participle · passive	iron not said here						vn destroy-44 «NP V NP»

Option 3 · ✓ the right answer

The mass increases, oxygen having combined with the iron

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 increases	det
2	mass	mass	ADJ	Degree=Pos	3 increases	amod
3	increases	increase	NOUN	Number=Plur	7 combined	nsubj:pass
4	,	,	PUNCT	_	5 oxygen	punct
5	oxygen	oxygen	NOUN	Number=Sing	7 combined	nsubj:pass
6	having	have	AUX	Tense=Pres VerbForm=Part	7 combined	aux
7	combined	combine	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
8	with	with	ADP	_	10 iron	case
9	the	the	DET	Definite=Def PronType=Art	10 iron	det
10	iron	iron	NOUN	Number=Sing	7 combined	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	combine	gerund · perfect · passive		the mass increases				with the iron	vn mix-22.1-1-1 «NP V NP PP.co-patient»: subject=Patient with iron=Co-Patient

Option 4

The mass remains wholly unaltered

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 remains	det
2	mass	mass	ADJ	Degree=Pos	3 remains	amod
3	remains	remains	NOUN	Number=Ptan	root	root
4	wholly	wholly	ADV	_	5 unaltered	advmod
5	unaltered	unaltered	ADJ	Degree=Pos	3 remains	amod

The frames reader finds no event or fact in this sentence.

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/chemistry/3-molecules-when-atoms-join-up/e4/