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Test 2 · ★ · Tarnish and how metals change

Grandma's silver teapot is dark; Mia wants to scrub hard with polish every week. What's the catch?

Mova's choice: option 1 · The right answer: option 4 · wrong ✗ · Who acts: silver teapot, Mia, catch · What happens: be, want, scrub

This is test 2 · ★ of lesson 14 «Tarnish and how metals change» 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: Grandma's silver teapot is dark; Mia wants to scrub hard with polish every week.

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Grandma	grandma	NOUN	Number=Sing	4 teapot	nmod:poss
2	's	's	PART	_	1 Grandma	case
3	silver	silver	NOUN	Number=Sing	4 teapot	compound
4	teapot	teapot	NOUN	Number=Sing	6 dark	nsubj
5	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 dark	cop
6	dark	dark	ADJ	Degree=Pos	root	root
7	;	;	PUNCT	_	9 wants	punct
8	Mia	Mia	PROPN	Number=Sing	9 wants	nsubj
9	wants	want	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 dark	parataxis
10	to	to	PART	_	11 scrub	mark
11	scrub	scrub	VERB	VerbForm=Inf	9 wants	xcomp
12	hard	hard	ADV	Degree=Pos	11 scrub	advmod
13	with	with	ADP	_	14 polish	case
14	polish	polish	NOUN	Number=Sing	11 scrub	obl
15	every	every	DET	PronType=Tot	16 week	det
16	week	week	NOUN	Number=Sing	11 scrub	obl:unmarked
17	.	.	PUNCT	_	6 dark	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	Grandma's silver teapot					dark property	tree rules
2	want	present	Mia						vn want-32.1-1-1 «NP V NP S_INF»: agent=Pivot clause=Theme
3	scrub not said to happen	to-infinitive	Mia not said here				week	with polish; hard property	vn wipe_manner-10.4.1-1 «NP V PP-Conative»: agent=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.

Sentence 2: What's the catch?

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	What	what	PRON	PronType=Int	root	root
2	's	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	1 What	cop
3	the	the	DET	Definite=Def PronType=Art	4 catch	det
4	catch	catch	NOUN	Number=Sing	1 What	nsubj
5	?	?	PUNCT	_	1 What	punct

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

The options

Option 1 · ← Mova's choice

Polish turns silver into copper

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Polish	polish	NOUN	Number=Sing	2 turns	nsubj
2	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	silver	silver	NOUN	Number=Sing	2 turns	obj
4	into	into	ADP	_	5 copper	case
5	copper	copper	NOUN	Number=Sing	2 turns	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	turn	present	Polish	silver		copper			vn roll-51.3.1 «NP V NP PP.trajectory»: agent=Agent silver=Theme into copper=Trajectory

Option 2

Polish makes the silver rust like iron

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Polish	polish	NOUN	Number=Sing	2 makes	nsubj
2	makes	make	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	the	the	DET	Definite=Def PronType=Art	5 rust	det
4	silver	silver	NOUN	Number=Sing	5 rust	compound
5	rust	rust	NOUN	Number=Sing	2 makes	obj
6	like	like	ADP	_	7 iron	case
7	iron	iron	NOUN	Number=Sing	2 makes	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	make	present	Polish	the silver rust				like iron	vn build-26.1-1 «NP.asset V NP»: agent=Asset rust=Product

Option 3

Scrubbing makes the tarnish come back green

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Scrubbing	scrub	VERB	VerbForm=Ger	2 makes	nsubj
2	makes	make	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	the	the	DET	Definite=Def PronType=Art	4 tarnish	det
4	tarnish	tarnish	NOUN	Number=Sing	2 makes	obj
5	come	come	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	2 makes	xcomp
6	back	back	ADV	_	5 come	advmod
7	green	green	ADJ	Degree=Pos	5 come	xcomp

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	scrub	gerund							vn wipe_manner-10.4.1-1 «NP V PP-Conative»: agent=Agent
2	make	present		the tarnish					tree rules
3	come back	present	the tarnish not said here					green property	vn escape-51.1-1 «NP V»: agent=Theme

Option 4 · ✓ the right answer

Each polish rubs a little silver away

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Each	each	DET	PronType=Tot	2 polish	det
2	polish	polish	NOUN	Number=Sing	3 rubs	nsubj
3	rubs	rub	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	a	a	DET	Definite=Ind PronType=Art	6 silver	det
5	little	little	ADJ	Degree=Pos	6 silver	amod
6	silver	silver	NOUN	Number=Sing	3 rubs	obj
7	away	away	ADV	_	3 rubs	advmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	rub	present	each polish	a little silver				away property	vn spray-9.7-1 «NP V NP.theme»: agent=Agent silver=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/14-tarnish-and-how-metals-change/t2/