---
title: When a liquid cools enough, its particles slow down and lock into pl… — Melting, freezing and boiling · tree and pragmatics
description: When a liquid cools enough, its particles slow down and lock into place: this is freezing. Who acts: liquid, particles, this. A sentence of the lesson «Melting, freezing and boiling» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Melting, freezing and boiling, sentence 1

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When a liquid cools enough, its particles slow down and lock into place: this is freezing.

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**Who acts:** liquid, particles, this · **What happens:** cool, slow down, lock, freeze · **To what, where:** place

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This is a sentence of the lesson «Melting, freezing and boiling» of the world 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 (liquid, particles, this), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:012-melting-freezing-boiling.lesson:1
# text = When a liquid cools enough, its particles slow down and lock into place: this is freezing.
# source = school lesson (ours)
# course = world
# lesson = 012-melting-freezing-boiling.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): no change
1	When	when	SCONJ	WRB	_	4	mark	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
3	liquid	liquid	NOUN	NN	Number=Sing	4	nsubj	_	_
4	cools	cool	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	advcl	_	_
5	enough	enough	ADV	RB	_	4	advmod	_	_
6	,	,	PUNCT	,	_	9	punct	_	_
7	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
8	particles	particle	NOUN	NNS	Number=Plur	9	nsubj	_	_
9	slow	slow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	down	down	ADP	RP	_	9	compound:prt	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	lock	lock	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	_
13	into	into	ADP	IN	_	14	case	_	_
14	place	place	NOUN	NN	Number=Sing	12	obl	_	_
15	:	:	PUNCT	:	_	18	punct	_	_
16	this	this	PRON	DT	Number=Sing|PronType=Dem	18	nsubj	_	_
17	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	aux	_	_
18	freezing	freeze	VERB	VBG	Tense=Pres|VerbForm=Part	14	appos	_	_
19	.	.	PUNCT	.	_	9	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 | **cool** | present | a liquid |  |  |  |  | enough *property* | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 2 | **slow down** | present | liquid's particles |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 3 | **lock** | present | liquid's particles *not said here* |  |  | place |  |  | vn tape-22.4 «NP V ADV-Middle»: agent=Patient |
| 4 | **freeze** | present · progressive | this |  |  |  |  |  | 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.

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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:world:012-melting-freezing-boiling.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): no change. **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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