---
title: Teacher: "a cut apple and a cut bit of metal both change in air". Wh… — Tarnish and how metals change · tree and pragmatics
description: Teacher: "a cut apple and a cut bit of metal both change in air". What makes both happen? Test 10 · ★ of lesson 14 «Tarnish and how metals change» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 10 · ★ · Tarnish and how metals change

<!-- .ven lang=en -->
Teacher: "a cut apple and a cut bit of metal both change in air". What makes both happen?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** Teacher, both · **What happens:** change, make, happen · **To what, where:** air

<!-- .vabout -->
This is test 10 · ★ 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](https://md.mova.elamur.ai/free/en/school-run/chemistry/14-tarnish-and-how-metals-change/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* Teacher: "a cut apple and a cut bit of metal both change in air".

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:1
# text = Teacher: "a cut apple and a cut bit of metal both change in air".
1	Teacher	teacher	NOUN	NN	Number=Sing	14	nsubj	_	SpaceAfter=No
2	:	:	PUNCT	:	_	6	punct	_	_
3	"	"	PUNCT	``	_	6	punct	_	SpaceAfter=No
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	cut	cut	ADJ	JJ	Degree=Pos	6	amod	_	_
6	apple	apple	NOUN	NN	Number=Sing	1	conj	_	_
7	and	and	CCONJ	CC	_	10	cc	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
9	cut	cut	ADJ	JJ	Degree=Pos	10	amod	_	_
10	bit	bit	NOUN	NN	Number=Sing	6	conj	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	metal	metal	NOUN	NN	Number=Sing	10	nmod	_	_
13	both	both	DET	DT	PronType=Tot	14	nsubj	_	_
14	change	change	VERB	VBP	Mood=Ind|Tense=Pres|VerbForm=Fin	0	root	_	_
15	in	in	ADP	IN	_	16	case	_	_
16	air	air	NOUN	NN	Number=Sing	14	obl	_	SpaceAfter=No
17	"	"	PUNCT	''	_	16	punct	_	SpaceAfter=No
18	.	.	PUNCT	.	_	14	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** *in a quote* | present | Teacher and a cut apple and a cut bit of metal |  |  | air |  |  | vn dress-41.1.1-1-1 «NP V»: agent=Agent |

<!-- .note -->
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.

<!-- .note -->
*Sentence 2:* What makes both happen?

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:2
# text = What makes both happen?
1	What	what	PRON	WP	PronType=Int	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	both	both	DET	DT	PronType=Tot	4	nsubj	_	_
4	happen	happen	VERB	VB	VerbForm=Inf	2	xcomp	_	SpaceAfter=No
5	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present |  |  |  |  |  |  | tree rules |
| 2 | **happen** | infinitive | both |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Water from the air freezing on them

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:o1:1
# text = Water from the air freezing on them
1	Water	water	NOUN	NN	Number=Sing	5	nsubj	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	air	air	NOUN	NN	Number=Sing	1	nmod	_	_
5	freezing	freeze	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | gerund | Water from the air |  |  |  |  | on them *= they* | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Oxygen in the air reacting with them

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:o2:1
# text = Oxygen in the air reacting with them
1	Oxygen	oxygen	NOUN	NN	Number=Sing	0	root	_	_
2	in	in	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	air	air	NOUN	NN	Number=Sing	1	nmod	_	_
5	reacting	react	VERB	VBG	VerbForm=Ger	1	acl	_	_
6	with	with	ADP	IN	_	7	case	_	_
7	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **react** | gerund | Oxygen in the air *not said here* |  |  |  |  | with them *= they* | vn respond-113 «NP V PP.predicate»: agent=Agent with they=Eventuality |

### Option 3 {#o3}

<!-- .ven lang=en -->
Light from the windows bleaching them

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:o3:1
# text = Light from the windows bleaching them
1	Light	light	NOUN	NN	Number=Sing	0	root	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	windows	window	NOUN	NNS	Number=Plur	1	nmod	_	_
5	bleaching	bleach	VERB	VBG	VerbForm=Ger	4	acl	_	_
6	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bleach** | gerund | the windows *not said here* | windows *= window* |  |  |  |  | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent they=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Germs from the air eating them

```conllu
# sent_id = question:chemistry:14-tarnish-and-how-metals-change:t10:o4:1
# text = Germs from the air eating them
1	Germs	germ	NOUN	NNS	Number=Plur	5	nsubj	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	air	air	NOUN	NN	Number=Sing	1	nmod	_	_
5	eating	eat	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
6	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **eat** | gerund | Germs from the air | them *= they* |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent they=Patient |

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**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.

<!-- /div -->

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- ← previous: [Tarnish and how metals change, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/14-tarnish-and-how-metals-change/t9/)
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