---
title: Its tiny molecules pull hard on each other, and at the surface that… — Water: the most amazing liquid · tree and pragmatics
description: Its tiny molecules pull hard on each other, and at the surface that pull makes a stretchy "skin" strong enough for a pond skater to walk on. Who acts: tiny molecules, that. A sentence of the lesson «Water: the most amazing liquid» of the chemistry course of Mova's primary school with its dependency 
---

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# Water: the most amazing liquid, sentence 1

<!-- .ven lang=en -->
Its tiny molecules pull hard on each other, and at the surface that pull makes a stretchy "skin" strong enough for a pond skater to walk on.

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**Who acts:** tiny molecules, that · **What happens:** pull, make, walk on · **To what, where:** stretchy skin, surface

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This is a sentence of the lesson «Water: the most amazing liquid» 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 (tiny molecules, that), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:034-water-amazing-liquid.lesson:1
# text = Its tiny molecules pull hard on each other, and at the surface that pull makes a stretchy "skin" strong enough for a pond skater to walk on.
# source = school lesson (ours)
# course = chemistry
# lesson = 034-water-amazing-liquid.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): R5-strong ×2, R7-rel-agree ×2
1	Its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	3	nmod:poss	_	_
2	tiny	tiny	ADJ	JJ	Degree=Pos	3	amod	_	_
3	molecules	molecule	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	pull	pull	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	hard	hard	ADV	RB	Degree=Pos	4	advmod	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	each	each	DET	DT	ExtPos=PRON|PronType=Rcp	4	obl	_	_
8	other	other	ADJ	JJ	Degree=Pos	7	fixed	_	_
9	,	,	PUNCT	,	_	13	punct	_	_
10	and	and	CCONJ	CC	_	13	cc	_	_
11	at	at	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	surface	surface	NOUN	NN	Number=Sing	16	obl	_	Agree=R5-strong|Haiku=4:parataxis
14	that	that	PRON	WDT	PronType=Rel	16	nsubj	_	_
15	pull	pull	NOUN	NN	Number=Sing	16	nsubj	_	_
16	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	Agree=R5-strong|Haiku=13:acl:relcl
17	a	a	DET	DT	Definite=Ind|PronType=Art	20	det	_	_
18	stretchy	stretchy	ADJ	JJ	Degree=Pos	20	amod	_	_
19	"	"	PUNCT	``	_	20	punct	_	_
20	skin	skin	NOUN	NN	Number=Sing	16	obj	_	_
21	"	"	PUNCT	''	_	20	punct	_	_
22	strong	strong	ADJ	JJ	Degree=Pos	16	xcomp	_	Agree=R7-rel-agree|Haiku=16:conj
23	enough	enough	ADV	RB	_	22	advmod	_	_
24	for	for	ADP	IN	_	27	case	_	_
25	a	a	DET	DT	Definite=Ind|PronType=Art	27	det	_	_
26	pond	pond	NOUN	NN	Number=Sing	27	compound	_	_
27	skater	skater	NOUN	NN	Number=Sing	16	obl	_	_
28	to	to	PART	TO	_	29	mark	_	_
29	walk	walk	VERB	VB	VerbForm=Inf	22	advcl	_	Agree=R7-rel-agree|Haiku=22:xcomp
30	on	on	ADV	RB	_	29	advmod	_	_
31	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull** | present | Water's tiny molecules |  |  |  |  | on each; hard *property* | vn push-12-1 «NP V PP-Conative»: agent=Agent on each=Theme |
| 2 | **make** | present | that | a stretchy skin |  | the surface |  | for a pond skater; strong *property* | vn build-26.1-1 «NP V NP P.asset»: agent=Agent skin=Product for skater=Asset |
| 3 | **walk on** | to-infinitive | that *not said here* |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=Theme |

<!-- .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:chemistry:034-water-amazing-liquid.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): R5-strong ×2, 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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