---
title: Mia says plastic is made from melted sand. What's true? — Plastics: useful and stubborn · tree and pragmatics
description: Mia says plastic is made from melted sand. What's true? Test 7 of lesson 29 «Plastics: useful and stubborn» 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 wrong.
---

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# Test 7 · Plastics: useful and stubborn

<!-- .ven lang=en -->
Mia says plastic is made from melted sand. What's true?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** Mia · **What happens:** say, make, melt, be · **To what, where:** plastic, melted sand · **Speech:** someone speaks here

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This is test 7 of lesson 29 «Plastics: useful and stubborn» 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/29-plastics-useful-stubborn/#t7).

## The question {#question}

<!-- .note -->
*Sentence 1:* Mia says plastic is made from melted sand.

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:1
# text = Mia says plastic is made from melted sand.
1	Mia	Mia	PROPN	NNP	Number=Sing	2	nsubj	_	_
2	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	plastic	plastic	NOUN	NN	Number=Sing	5	nsubj:pass	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux:pass	_	_
5	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	ccomp	_	_
6	from	from	ADP	IN	_	8	case	_	_
7	melted	melt	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	amod	_	_
8	sand	sand	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
9	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Mia |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **make** | present · passive |  | plastic |  | melted sand |  |  | vn build-26.1-1 «NP.asset V PP»: subject=Product from sand=Material |
| 3 | **melt** | participle |  |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

<!-- .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's true?

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:2
# text = What's true?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | true *property* | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Plastic is made from melted metal

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:o1:1
# text = Plastic is made from melted metal
1	Plastic	plastic	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	melted	melt	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	amod	_	_
6	metal	metal	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | Plastic |  | melted metal |  |  | vn build-26.1-1 «NP.asset V PP»: subject=Product from metal=Material |
| 2 | **melt** | participle |  |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Plastic is made from tree bark

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:o2:1
# text = Plastic is made from tree bark
1	Plastic	plastic	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	tree	tree	NOUN	NN	Number=Sing	6	compound	_	_
6	bark	bark	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | Plastic |  | tree bark |  |  | vn build-26.1-1 «NP.asset V PP»: subject=Product from bark=Material |

### Option 3 {#o3}

<!-- .ven lang=en -->
She's right, sand melts into plastic

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:o3:1
# text = She's right, sand melts into plastic
1	She	she	PRON	PRP	Case=Nom|Gender=Fem|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	right	right	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	6	punct	_	_
5	sand	sand	NOUN	NN	Number=Sing	6	nsubj	_	_
6	melts	melt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
7	into	into	ADP	IN	_	8	case	_	_
8	plastic	plastic	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | She |  |  |  |  | right *property* | tree rules |
| 2 | **melt** | present | sand |  |  | plastic |  |  | vn knead-26.5 «NP.material V PP.product»: agent=Material into plastic=Product |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Most plastic comes from oil and gas

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t7:o4:1
# text = Most plastic comes from oil and gas
1	Most	most	ADJ	JJS	Degree=Sup	2	amod	_	_
2	plastic	plastic	NOUN	NN	Number=Sing	3	nsubj	_	_
3	comes	come	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	from	from	ADP	IN	_	5	case	_	_
5	oil	oil	NOUN	NN	Number=Sing	3	obl	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	gas	gas	NOUN	NN	Number=Sing	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **come** | present | Most plastic |  |  | oil and gas |  |  | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme from oil=Initial\_Location |

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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: [Plastics: useful and stubborn, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t6/)
- next →: [Plastics: useful and stubborn, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t8/)
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