---
title: They are strong on purpose, so that they can break down dirt, grease… — Cleaning chemicals and safety at home · tree and pragmatics
description: They are strong on purpose, so that they can break down dirt, grease and germs. Who acts: bottles. A sentence of the lesson «Cleaning chemicals and safety at home» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Cleaning chemicals and safety at home, sentence 1

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They are strong on purpose, so that they can break down dirt, grease and germs.

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**Who acts:** bottles · **What happens:** be, break down · **To what, where:** purpose, dirt

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This is a sentence of the lesson «Cleaning chemicals and safety at home» 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 (bottles), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:025-cleaning-chemicals-safety.lesson:1
# text = They are strong on purpose, so that they can break down dirt, grease and germs.
# source = school lesson (ours)
# course = chemistry
# lesson = 025-cleaning-chemicals-safety.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): R7-rel-agree ×2
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	strong	strong	ADJ	JJ	Degree=Pos	0	root	_	_
4	on	on	ADP	IN	_	5	case	_	_
5	purpose	purpose	NOUN	NN	Number=Sing	3	obl	_	_
6	,	,	PUNCT	,	_	11	punct	_	_
7	so	so	SCONJ	IN	_	11	mark	_	Agree=R7-rel-agree|Haiku=11:advmod|HaikuPos=ADV:RB:_
8	that	that	SCONJ	IN	_	11	mark	_	_
9	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	11	nsubj	_	_
10	can	can	AUX	MD	VerbForm=Fin	11	aux	_	_
11	break	break	VERB	VB	VerbForm=Inf	3	advcl	_	_
12	down	down	ADP	RP	_	11	compound:prt	_	_
13	dirt	dirt	NOUN	NN	Number=Sing	11	obj	_	_
14	,	,	PUNCT	,	_	15	punct	_	_
15	grease	grease	NOUN	NN	Number=Sing	13	conj	_	Agree=R7-rel-agree|Haiku=13:appos
16	and	and	CCONJ	CC	_	17	cc	_	_
17	germs	germ	NOUN	NNS	Number=Plur	15	conj	_	_
18	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | bottles *= bottle* |  |  | purpose |  | strong *property* | tree rules |
| 2 | **break down** | can | bottles *= bottle* | dirt and grease and germs |  |  |  |  | vn break-45.1 «NP V NP»: agent=Agent dirt=Patient |

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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.

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**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:025-cleaning-chemicals-safety.lesson:1`.

**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): R7-rel-agree ×2. **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/).

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- ← previous: [Cleaning chemicals and safety at home, 0](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/25-cleaning-chemicals-safety/0/)
- next →: [Cleaning chemicals and safety at home, 2](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/25-cleaning-chemicals-safety/2/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/25-cleaning-chemicals-safety/)