Exam question 1 · Separating mixtures

Which of the following statements most accurately characterises the recovery of salt from a solution of salt in water?

Mova's choice: option 4 · The right answer: option 4 · right ✓ · Who acts: salt · What happens: follow, characteris, recover · To what, where: recovery, solution

This is exam question 1 of lesson 8 «Separating mixtures» 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	the	the	DET	Definite=Def PronType=Art	10 recovery	det
10	recovery	recovery	NOUN	Number=Sing	8 characterises	obj
11	of	of	ADP	_	12 salt	case
12	salt	salt	NOUN	Number=Sing	10 recovery	nmod
13	from	from	ADP	_	15 solution	case
14	a	a	DET	Definite=Ind PronType=Art	15 solution	det
15	solution	solution	NOUN	Number=Sing	8 characterises	obl
16	of	of	ADP	_	17 salt	case
17	salt	salt	NOUN	Number=Sing	15 solution	nmod
18	in	in	ADP	_	19 water	case
19	water	water	NOUN	Number=Sing	17 salt	nmod
20	?	?	PUNCT	_	8 characterises	punct

#	verb	tense, mood	who	what, whom	where	other	roles by
1	follow	gerund					vn occur-48.3-1 «NP V»: agent=Theme
2	characteris	present		the recovery of salt	a solution of salt in water	of the following statements; accurately property	tree rules
3	recover		salt				nom recovery «event intransitive»: of=agent

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

The solution is left to stand until the salt floats

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 solution	det
2	solution	solution	NOUN	Number=Sing	4 left	nsubj:pass
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 left	aux:pass
4	left	leave	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	to	to	PART	_	6 stand	mark
6	stand	stand	VERB	VerbForm=Inf	4 left	xcomp
7	until	until	SCONJ	_	10 floats	mark
8	the	the	DET	Definite=Def PronType=Art	9 salt	det
9	salt	salt	NOUN	Number=Sing	10 floats	nsubj
10	floats	float	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 stand	advcl

#	verb	tense, mood	who	what, whom	roles by
1	leave	present · passive		the solution	tree rules
2	stand	to-infinitive	the solution not said here		vn assuming_position-50 «NP V»: agent=Agent
3	float	present	the salt		vn run-51.3.2-2 «NP V»: agent=Theme

Option 2

A magnet is applied to the solution to extract the salt

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	A	a	DET	Definite=Ind PronType=Art	2 magnet	det
2	magnet	magnet	NOUN	Number=Sing	4 applied	nsubj:pass
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 applied	aux:pass
4	applied	apply	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	to	to	ADP	_	7 solution	case
6	the	the	DET	Definite=Def PronType=Art	7 solution	det
7	solution	solution	NOUN	Number=Sing	4 applied	obl
8	to	to	PART	_	9 extract	mark
9	extract	extract	VERB	VerbForm=Inf	4 applied	advcl
10	the	the	DET	Definite=Def PronType=Art	11 salt	det
11	salt	salt	NOUN	Number=Sing	9 extract	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	apply	present · passive		a magnet				to the solution	vn use-105.1 «NP V NP»: subject=Theme
2	extract	to-infinitive		the salt					vn remove-10.1 «NP V NP»: agent=Agent salt=Theme

Option 3

The solution is passed through filter paper, which retains the salt

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 solution	det
2	solution	solution	NOUN	Number=Sing	4 passed	nsubj:pass
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 passed	aux:pass
4	passed	pass	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	through	through	ADP	_	7 paper	case
6	filter	filter	NOUN	Number=Sing	7 paper	compound
7	paper	paper	NOUN	Number=Sing	4 passed	obl
8	,	,	PUNCT	_	10 retains	punct
9	which	which	PRON	PronType=Rel	10 retains	nsubj
10	retains	retain	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	7 paper	acl:relcl
11	the	the	DET	Definite=Def PronType=Art	12 salt	det
12	salt	salt	NOUN	Number=Sing	10 retains	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	pass	present · passive		the solution		filter paper			vn throw-17.1-1 «NP V NP PP.destinations»: subject=Theme through paper=Destination
2	retain	present	filter paper	the salt					tree rules

Option 4 · ← Mova's choice · ✓ the right answer

The water is permitted to evaporate, the salt remaining as crystals

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 water	det
2	water	water	NOUN	Number=Sing	4 permitted	nsubj:pass
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 permitted	aux:pass
4	permitted	permit	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	to	to	PART	_	6 evaporate	mark
6	evaporate	evaporate	VERB	VerbForm=Inf	4 permitted	xcomp
7	,	,	PUNCT	_	9 salt	punct
8	the	the	DET	Definite=Def PronType=Art	9 salt	det
9	salt	salt	NOUN	Number=Sing	4 permitted	obl
10	remaining	remain	VERB	VerbForm=Ger	9 salt	acl
11	as	as	ADP	_	12 crystals	case
12	crystals	crystal	NOUN	Number=Plur	10 remaining	obl

#	verb	tense, mood	who	what, whom	other	roles by
1	permit	present · passive		the water	the salt obl	vn allow-64.1-1 «NP V NP S»: subject=Beneficiary clause=Eventuality
2	evaporate not said to happen	to-infinitive				vn other_cos-45.4 «NP.patient V»: agent=Patient
3	remain	gerund	the salt not said here		as crystals	vn exist-47.1 «NP V»: 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.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/8-separating-mixtures/e1/