---
title: In a lava lamp, wax heated at the bottom expands, becomes less dense… — Oil and water, and things that won't mix · tree and pragmatics
description: In a lava lamp, wax heated at the bottom expands, becomes less dense and rises, then cools and sinks. Who acts: wax. A sentence of the lesson «Oil and water, and things that won't mix» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Oil and water, and things that won't mix, sentence 12

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In a lava lamp, wax heated at the bottom expands, becomes less dense and rises, then cools and sinks.

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**Who acts:** wax · **What happens:** heat, expand, become, rise, cool, sink · **To what, where:** wax, bottom, lava lamp

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This is a sentence of the lesson «Oil and water, and things that won't mix» 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 (wax), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:007-oil-and-water.lesson:12
# text = In a lava lamp, wax heated at the bottom expands, becomes less dense and rises, then cools and sinks.
# source = school lesson (ours)
# course = chemistry
# lesson = 007-oil-and-water.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): R3-conj-first ×1
1	In	in	ADP	IN	_	4	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	lava	lava	NOUN	NN	Number=Sing	4	compound	_	_
4	lamp	lamp	NOUN	NN	Number=Sing	11	obl	_	_
5	,	,	PUNCT	,	_	4	punct	_	_
6	wax	wax	NOUN	NN	Number=Sing	11	nsubj	_	_
7	heated	heat	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	acl	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	bottom	bottom	NOUN	NN	Number=Sing	7	obl	_	_
11	expands	expand	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
12	,	,	PUNCT	,	_	13	punct	_	_
13	becomes	become	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	conj	_	_
14	less	less	ADV	RBR	Degree=Cmp	15	advmod	_	_
15	dense	dense	ADJ	JJ	Degree=Pos	13	xcomp	_	_
16	and	and	CCONJ	CC	_	17	cc	_	_
17	rises	rise	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	conj	_	Agree=R3-conj-first|Haiku=13:conj
18	,	,	PUNCT	,	_	20	punct	_	_
19	then	then	ADV	RB	PronType=Dem	20	advmod	_	_
20	cools	cool	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	conj	_	_
21	and	and	CCONJ	CC	_	22	cc	_	_
22	sinks	sink	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	20	conj	_	_
23	.	.	PUNCT	.	_	11	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **heat** | participle |  | wax *not said here* |  | the bottom |  |  | vn cooking-45.3 «NP.patient V»: agent=Patient |
| 2 | **expand** | present | wax |  |  | a lava lamp |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 3 | **become** | present | wax *not said here* |  |  |  |  | dense *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |
| 4 | **rise** | present | wax *not said here* |  |  |  |  |  | vn assuming\_position-50 «NP V»: agent=Agent |
| 5 | **cool** | present | wax *not said here* |  |  |  | then |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 6 | **sink** | present | wax *not said here* |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=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:007-oil-and-water.lesson:12`.

**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): R3-conj-first ×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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