---
title: An object floats if it is less dense than the water: it has less mas… — Materials and their properties · tree and pragmatics
description: An object floats if it is less dense than the water: it has less mass than the same amount of water would have. Who acts: object. A sentence of the lesson «Materials and their properties» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Materials and their properties, sentence 3

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An object floats if it is less dense than the water: it has less mass than the same amount of water would have.

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**Who acts:** object · **What happens:** float, be, have, amount · **To what, where:** less mass, water

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This is a sentence of the lesson «Materials and their properties» 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 (object), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:018-materials-and-properties.lesson:3
# text = An object floats if it is less dense than the water: it has less mass than the same amount of water would have.
# source = school lesson (ours)
# course = world
# lesson = 018-materials-and-properties.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): R6-punct-agree ×1, R7-rel-agree ×1
1	An	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	object	object	NOUN	NN	Number=Sing	3	nsubj	_	_
3	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	if	if	SCONJ	IN	_	8	mark	_	_
5	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
7	less	less	ADV	RBR	Degree=Cmp	8	advmod	_	_
8	dense	dense	ADJ	JJ	Degree=Pos	3	advcl	_	_
9	than	than	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	water	water	NOUN	NN	Number=Sing	8	obl	_	_
12	:	:	PUNCT	:	_	14	punct	_	_
13	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	14	nsubj	_	_
14	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
15	less	less	ADJ	JJR	Degree=Cmp	16	amod	_	_
16	mass	mass	NOUN	NN	Number=Sing	14	obj	_	_
17	than	than	ADP	IN	_	20	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	same	same	ADJ	JJ	Degree=Pos	20	amod	_	_
20	amount	amount	NOUN	NN	Number=Sing	16	obl	_	_
21	of	of	ADP	IN	_	22	case	_	_
22	water	water	NOUN	NN	Number=Sing	20	nmod	_	_
23	would	would	AUX	MD	VerbForm=Fin	24	aux	_	_
24	have	have	VERB	VB	VerbForm=Inf	3	parataxis	_	_
25	.	.	PUNCT	.	_	3	punct	_	Agree=R6-punct-agree|Haiku=24: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 | **float** | present | a object |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 2 | **is** *a condition, not said to happen* | present | object |  |  |  |  | than the water; dense, less *property* | tree rules |
| 3 | **have** | present | object | less mass |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent mass=Patient |
| 4 | **have** | would |  |  |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent |
| 5 | **amount** |  |  | water |  |  |  |  | nom amount «possession transitive»: of=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:018-materials-and-properties.lesson:3`.

**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): R6-punct-agree ×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/).

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- ← previous: [Materials and their properties, 2](https://md.mova.elamur.ai/free/en/corpora/school/world/18-materials-and-properties/2/)
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- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/18-materials-and-properties/)