Exam question 4 · Indicators: the red-cabbage rainbow

Select the response consistent with the established facts concerning litmus.

Mova's choice: option 1 · The right answer: option 2 · wrong ✗ · Who acts: you, established facts · What happens: select, establish, concern · To what, where: response, litmus

This is exam question 4 of lesson 17 «Indicators: the red-cabbage rainbow» 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	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	litmus	litmus	NOUN	Number=Sing	9 concerning	obj
11	.	.	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	litmus		vn amuse-31.1 «NP V NP»: agent=Stimulus litmus=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

It turns blue in acid and red in alkali, and its dye is obtained from cabbage

The tree, 16 words

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 turns	nsubj
2	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	blue	blue	ADJ	Degree=Pos	2 turns	xcomp
4	in	in	ADP	_	5 acid	case
5	acid	acid	ADJ	Degree=Pos	2 turns	obl
6	and	and	CCONJ	_	7 red	cc
7	red	red	ADJ	Degree=Pos	5 acid	conj
8	in	in	ADP	_	9 alkali	case
9	alkali	alkali	NOUN	Number=Sing	2 turns	obl
10	,	,	PUNCT	_	15 obtained	punct
11	and	and	CCONJ	_	15 obtained	cc
12	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	13 dye	nmod:poss
13	dye	dye	NOUN	Number=Sing	15 obtained	nsubj:pass
14	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	15 obtained	aux:pass
15	obtained	obtain	VERB	Tense=Past VerbForm=Part Voice=Pass	2 turns	conj
16	from	from	ADP	_	17 cabbage	case
17	cabbage	cabbage	NOUN	Number=Sing	15 obtained	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	turn	present	It			acid		in alkali; blue property	vn roll-51.3.1 «NP.theme V PP.source PP.trajectory PP.destination»: agent=Theme in acid=Source in alkali=Trajectory
2	obtain	present · passive		alkali's dye		cabbage			vn obtain-13.5.2-1 «NP V NP PP.source»: subject=Theme from cabbage=Source

Option 2 · ✓ the right answer

It turns red in acid and blue in alkali, and its dye is obtained from lichens

The tree, 16 words

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 turns	nsubj
2	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	red	red	ADJ	Degree=Pos	2 turns	xcomp
4	in	in	ADP	_	5 acid	case
5	acid	acid	NOUN	Number=Sing	2 turns	obl
6	and	and	CCONJ	_	7 blue	cc
7	blue	blue	ADJ	Degree=Pos	5 acid	conj
8	in	in	ADP	_	9 alkali	case
9	alkali	alkali	NOUN	Number=Sing	7 blue	obl
10	,	,	PUNCT	_	15 obtained	punct
11	and	and	CCONJ	_	15 obtained	cc
12	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	13 dye	nmod:poss
13	dye	dye	NOUN	Number=Sing	15 obtained	nsubj:pass
14	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	15 obtained	aux:pass
15	obtained	obtain	VERB	Tense=Past VerbForm=Part Voice=Pass	2 turns	parataxis
16	from	from	ADP	_	17 lichens	case
17	lichens	lichen	NOUN	Number=Plur	15 obtained	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	turn	present	It			acid		red property	vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme in acid=Trajectory
2	obtain	present · passive		alkali's dye		lichens			vn obtain-13.5.2-1 «NP V NP PP.source»: subject=Theme from lichen=Source

Option 3

It remains unchanged in acid and turns green in alkali

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 remains	nsubj
2	remains	remain	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	unchanged	unchanged	ADJ	Degree=Pos	2 remains	xcomp
4	in	in	ADP	_	5 acid	case
5	acid	acid	NOUN	Number=Sing	2 remains	obl
6	and	and	CCONJ	_	7 turns	cc
7	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	2 remains	conj
8	green	green	ADJ	Degree=Pos	7 turns	xcomp
9	in	in	ADP	_	10 alkali	case
10	alkali	alkali	NOUN	Number=Sing	7 turns	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	remain	present	It			acid		unchanged property	vn exist-47.1 «NP V PP.location»: agent=Theme in acid=Location
2	turn	present				alkali		green property	vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme in alkali=Trajectory

Option 4

It is a recent invention of the present century

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	5 invention	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	5 invention	cop
3	a	a	DET	Definite=Ind PronType=Art	5 invention	det
4	recent	recent	ADJ	Degree=Pos	5 invention	amod
5	invention	invention	NOUN	Number=Sing	root	root
6	of	of	ADP	_	9 century	case
7	the	the	DET	Definite=Def PronType=Art	9 century	det
8	present	present	ADJ	Degree=Pos	9 century	amod
9	century	century	NOUN	Number=Sing	5 invention	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is a	present	It	a recent invention			century		tree rules

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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