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Exam question 2 · Alkalis and soda, and how they cancel acids

It is given that a solution possesses a pH of 2. Select the statement most accurately characterising that solution.

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · Who acts: solution, you, statement · What happens: give, possess, select, characteris · To what, where: It, pH, statement, solution

This is exam question 2 of lesson 16 «Alkalis and soda, and how they cancel acids» 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 a solution possesses a pH of 2.

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	_	7 possesses	mark
5	a	a	DET	Definite=Ind PronType=Art	6 solution	det
6	solution	solution	NOUN	Number=Sing	7 possesses	nsubj
7	possesses	possess	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 given	advcl
8	a	a	DET	Definite=Ind PronType=Art	9 pH	det
9	pH	ph	NOUN	Number=Sing	7 possesses	obj
10	of	of	ADP	_	11 2	case
11	2	2	NUM	NumForm=Digit NumType=Card	9 pH	nmod
12	.	.	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	possess	present	a solution	a pH of 2					vn own-100.1 «NP V NP»: agent=Pivot ph=Theme

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: Select the statement most accurately characterising that solution.

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 statement	det
3	statement	statement	NOUN	Number=Sing	1 Select	obj
4	most	most	ADV	Degree=Sup	5 accurately	advmod
5	accurately	accurately	ADV	_	6 characterising	advmod
6	characterising	characteris	VERB	VerbForm=Ger	3 statement	acl
7	that	that	DET	Number=Sing PronType=Dem	8 solution	det
8	solution	solution	NOUN	Number=Sing	6 characterising	obj
9	.	.	PUNCT	_	1 Select	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	select	imperative	you not said here	the statement					vn obtain-13.5.2 «NP V NP»: agent=Agent statement=Theme
2	characteris	gerund	the statement not said here	that solution				accurately property	tree rules

The options

Option 1 · ← Mova's choice

It is neutral

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 neutral	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 neutral	cop
3	neutral	neutral	ADJ	Degree=Pos	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					neutral property	tree rules

Option 2

It is weakly alkaline

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 alkaline	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 alkaline	cop
3	weakly	weakly	ADJ	Degree=Pos	4 alkaline	amod
4	alkaline	alkaline	NOUN	Number=Sing	root	root

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

Option 3 · ✓ the right answer

It is strongly acidic

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 acidic	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 acidic	cop
3	strongly	strongly	ADV	_	4 acidic	advmod
4	acidic	acidic	ADJ	Degree=Pos	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					acidic, strongly property	tree rules

Option 4

It is strongly alkaline

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 alkaline	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 alkaline	cop
3	strongly	strongly	ADV	_	4 alkaline	advmod
4	alkaline	alkaline	ADJ	Degree=Pos	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					alkaline, strongly property	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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