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Test 5 · ★ · Alkalis and soda, and how they cancel acids

"oven cleaner's an alkali, not an acid, so it's safe on your hands innit". What's true?

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · Who acts: acid · What happens: be · To what, where: hands innit

This is test 5 · ★ of lesson 16 «Alkalis and soda, and how they cancel acids» of the chemistry course of Mova's primary school. 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: "oven cleaner's an alkali, not an acid, so it's safe on your hands innit".

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	"	"	PUNCT	_	6 alkali	punct
2	oven	oven	NOUN	Number=Sing	3 cleaner	compound
3	cleaner	cleaner	NOUN	Number=Sing	6 alkali	nmod:poss
4	's	's	PART	_	3 cleaner	case
5	an	a	DET	Definite=Ind PronType=Art	6 alkali	det
6	alkali	alkali	NOUN	Number=Sing	root	root
7	,	,	PUNCT	_	10 acid	punct
8	not	not	PART	Polarity=Neg	10 acid	advmod
9	an	a	DET	Definite=Ind PronType=Art	10 acid	det
10	acid	acid	NOUN	Number=Sing	6 alkali	appos
11	,	,	PUNCT	_	15 safe	punct
12	so	so	ADV	_	15 safe	advmod
13	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	15 safe	nsubj
14	's	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	15 safe	cop
15	safe	safe	ADJ	Degree=Pos	6 alkali	parataxis
16	on	on	ADP	_	19 innit	case
17	your	your	PRON	Case=Gen Person=2 Poss=Yes PronType=Prs	19 innit	nmod:poss
18	hands	hand	NOUN	Number=Plur	19 innit	compound
19	innit	innit	NOUN	Number=Sing	15 safe	obl
20	"	"	PUNCT	_	15 safe	punct
21	.	.	PUNCT	_	6 alkali	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is in a quote	present	acid			your hands innit		safe 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.

Sentence 2: What's true?

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	What	what	PRON	PronType=Int	3 true	nsubj
2	's	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 true	cop
3	true	true	ADJ	Degree=Pos	root	root
4	?	?	PUNCT	_	3 true	punct

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

The options

Option 1 · ← Mova's choice

Yes, only acids can ever burn your skin, not alkalis

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Yes	yes	INTJ	Polarity=Pos	7 burn	discourse
2	,	,	PUNCT	_	1 Yes	punct
3	only	only	ADV	_	4 acids	advmod
4	acids	acid	NOUN	Number=Plur	7 burn	nsubj
5	can	can	AUX	VerbForm=Fin	7 burn	aux
6	ever	ever	ADV	PronType=Ind	7 burn	advmod
7	burn	burn	VERB	VerbForm=Inf	root	root
8	your	your	PRON	Case=Gen Person=2 Poss=Yes PronType=Prs	9 skin	nmod:poss
9	skin	skin	NOUN	Number=Sing	7 burn	obj
10	,	,	PUNCT	_	12 alkalis	punct
11	not	not	PART	Polarity=Neg	12 alkalis	advmod
12	alkalis	alkalis	VERB	VerbForm=Inf	7 burn	conj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	burn	can	acids	your skin			ever		vn light_emission-43.1 «NP V NP.theme»: agent=Agent skin=Theme
2	not alkalis	infinitive	acids not said here						tree rules

Option 2

Yes, alkalis are always gentle

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Yes	yes	INTJ	Polarity=Pos	6 gentle	discourse
2	,	,	PUNCT	_	1 Yes	punct
3	alkalis	alkali	NOUN	Number=Plur	6 gentle	nsubj
4	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	6 gentle	cop
5	always	always	ADV	PronType=Tot	6 gentle	advmod
6	gentle	gentle	ADJ	Degree=Pos	root	root

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

Option 3 · ✓ the right answer

Strong alkalis can burn worse than some acids

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Strong	strong	ADJ	Degree=Pos	2 alkalis	amod
2	alkalis	alkali	NOUN	Number=Plur	4 burn	nsubj
3	can	can	AUX	VerbForm=Fin	4 burn	aux
4	burn	burn	VERB	VerbForm=Inf	root	root
5	worse	badly	ADV	Degree=Cmp	4 burn	advmod
6	than	than	ADP	_	8 acids	case
7	some	some	DET	PronType=Ind	8 acids	det
8	acids	acid	NOUN	Number=Plur	4 burn	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	burn	can	Strong alkalis					than some acids; badly property	vn light_emission-43.1 «NP V»: agent=Theme

Option 4

No, because it's secretly an acid

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	No	no	INTJ	Polarity=Neg	8 acid	discourse
2	,	,	PUNCT	_	8 acid	punct
3	because	because	SCONJ	_	8 acid	mark
4	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	8 acid	nsubj
5	's	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	8 acid	cop
6	secretly	secretly	ADV	_	8 acid	advmod
7	an	a	DET	Definite=Ind PronType=Art	8 acid	det
8	acid	acid	NOUN	Number=Sing	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is a	present	it	a acid				secretly 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.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/16-alkalis-and-soda/t5/