---
title: Many plastics soften when heated, because heat lets the chains move;… — Plastics: useful and stubborn · tree and pragmatics
description: Many plastics soften when heated, because heat lets the chains move; burning plastic gives off poisonous fumes. Who acts: Many plastics, heat, chains, burning plastic. A sentence of the lesson «Plastics: useful and stubborn» of the chemistry course of Mova's primary school with its dependency tree a
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/13/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/) / [Plastics: useful and stubborn](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/) / 13

# Plastics: useful and stubborn, sentence 13

<!-- .ven lang=en -->
Many plastics soften when heated, because heat lets the chains move; burning plastic gives off poisonous fumes.

<!-- .vintro -->
**Who acts:** Many plastics, heat, chains, burning plastic · **What happens:** soften, heat, let, move, burn, give off · **To what, where:** chains, poisonous fumes

<!-- .vabout -->
This is a sentence of the lesson «Plastics: useful and stubborn» of the chemistry course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Many plastics, heat, chains, burning plastic), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:029-plastics-useful-stubborn.lesson:13
# text = Many plastics soften when heated, because heat lets the chains move; burning plastic gives off poisonous fumes.
# source = school lesson (ours)
# course = chemistry
# lesson = 029-plastics-useful-stubborn.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1
1	Many	many	ADJ	JJ	Degree=Pos	2	amod	_	_
2	plastics	plastic	NOUN	NNS	Number=Plur	3	nsubj	_	Agree=R5-strong|Haiku=5:nsubj
3	soften	soften	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	when	when	SCONJ	WRB	_	5	mark	_	_
5	heated	heat	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
6	,	,	PUNCT	,	_	3	punct	_	_
7	because	because	SCONJ	IN	_	9	mark	_	_
8	heat	heat	NOUN	NN	Number=Sing	9	nsubj	_	_
9	lets	let	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	chains	chain	NOUN	NNS	Number=Plur	9	obj	_	_
12	move	move	VERB	VB	VerbForm=Inf	9	xcomp	_	_
13	;	;	PUNCT	,	_	3	punct	_	_
14	burning	burn	VERB	VBG	VerbForm=Ger	15	amod	_	Agree=R7-rel-agree|Haiku=15:compound|HaikuPos=NOUN:NN:Number=Sing
15	plastic	plastic	NOUN	NN	Number=Sing	16	nsubj	_	_
16	gives	give	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	_
17	off	off	ADP	RP	_	16	compound:prt	_	_
18	poisonous	poisonous	ADJ	JJ	Degree=Pos	19	amod	_	_
19	fumes	fume	NOUN	NNS	Number=Plur	16	obj	_	_
20	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **soften** | present | Many plastics |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 2 | **heat** | participle | Many plastics *not said here* |  |  |  |  |  | vn cooking-45.3 «NP.patient V»: agent=Patient |
| 3 | **let** | present | heat | the chains |  |  |  |  | tree rules |
| 4 | **move** | infinitive | the chains *not said here* |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 5 | **burn** | gerund |  |  |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |
| 6 | **give off** | present | burning plastic | poisonous fumes |  |  |  |  | vn substance\_emission-43.4 «NP V NP»: agent=Source fume=Theme |

<!-- .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.

<!-- div src -->

**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:chemistry:029-plastics-useful-stubborn.lesson:13`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

<!-- pn -->
- ← previous: [Plastics: useful and stubborn, 12](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/12/)
- next →: [Plastics: useful and stubborn, 14](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/14/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/)

