---
title: A smoke alarm senses tiny smoke particles; test it by pressing its b… — Fire: what it needs and how to put it out · tree and pragmatics
description: A smoke alarm senses tiny smoke particles; test it by pressing its button, never with a flame. Who acts: smoke alarm. A sentence of the lesson «Fire: what it needs and how to put it out» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Fire: what it needs and how to put it out, sentence 10

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A smoke alarm senses tiny smoke particles; test it by pressing its button, never with a flame.

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**Who acts:** smoke alarm · **What happens:** sense, test, press · **To what, where:** tiny smoke particles, oxygen, button

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This is a sentence of the lesson «Fire: what it needs and how to put it out» 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 (smoke alarm), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:012-fire-what-it-needs.lesson:10
# text = A smoke alarm senses tiny smoke particles; test it by pressing its button, never with a flame.
# source = school lesson (ours)
# course = chemistry
# lesson = 012-fire-what-it-needs.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 ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	smoke	smoke	NOUN	NN	Number=Sing	3	compound	_	_
3	alarm	alarm	NOUN	NN	Number=Sing	4	nsubj	_	_
4	senses	sense	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	tiny	tiny	ADJ	JJ	Degree=Pos	7	amod	_	_
6	smoke	smoke	NOUN	NN	Number=Sing	7	compound	_	_
7	particles	particle	NOUN	NNS	Number=Plur	4	obj	_	_
8	;	;	PUNCT	:	_	9	punct	_	_
9	test	test	VERB	VB	Mood=Imp|VerbForm=Fin	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	obj	_	_
11	by	by	SCONJ	IN	_	12	mark	_	_
12	pressing	press	VERB	VBG	Tense=Pres|VerbForm=Part	9	advcl	_	_
13	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	14	nmod:poss	_	_
14	button	button	NOUN	NN	Number=Sing	12	obj	_	_
15	,	,	PUNCT	,	_	19	punct	_	_
16	never	never	ADV	RB	PronType=Neg	19	advmod	_	_
17	with	with	ADP	IN	_	19	case	_	_
18	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
19	flame	flame	NOUN	NN	Number=Sing	12	obl	_	_
20	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **sense** | present | a smoke alarm | tiny smoke particles |  |  |  |  | vn see-30.1-1 «NP V S»: agent=Experiencer particle=Stimulus |
| 2 | **test** | infinitive |  | oxygen |  |  |  |  | vn assessment-34.1 «NP V NP»: agent=Agent it=Theme |
| 3 | **press** | gerund |  | oxygen's button |  |  |  | with a flame | vn push-12-1-1 «NP V NP»: agent=Agent button=Theme |

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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:012-fire-what-it-needs.lesson:10`.

**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 ×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/).

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