---
title: Your brother says sand dissolves if you stir long enough. Is he right? — Mixing and dissolving · tree and pragmatics
description: Your brother says sand dissolves if you stir long enough. Is he right? Test 10 · ★★ of lesson 6 «Mixing and dissolving» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 10 · ★★ · Mixing and dissolving

<!-- .ven lang=en -->
Your brother says sand dissolves if you stir long enough. Is he right?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** brother, sand, you · **What happens:** say, dissolve, stir, be · **Speech:** someone speaks here

<!-- .vabout -->
This is test 10 · ★★ of lesson 6 «Mixing and dissolving» of the chemistry course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/chemistry/6-mixing-and-dissolving/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* Your brother says sand dissolves if you stir long enough.

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:1
# text = Your brother says sand dissolves if you stir long enough.
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	brother	brother	NOUN	NN	Number=Sing	3	nsubj	_	_
3	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	sand	sand	NOUN	NN	Number=Sing	5	nsubj	_	_
5	dissolves	dissolve	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	ccomp	_	_
6	if	if	SCONJ	IN	_	8	mark	_	_
7	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	8	nsubj	_	_
8	stir	stir	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	5	advcl	_	_
9	long	long	ADV	RB	Degree=Pos	8	advmod	_	_
10	enough	enough	ADV	RB	_	9	advmod	_	SpaceAfter=No
11	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Your brother |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **dissolve** | present | sand |  |  |  |  |  | vn break-45.1 «NP.patient V»: agent=Patient |
| 3 | **stir** *a condition, not said to happen* | present | you |  |  |  |  | long *property* | vn amuse-31.1 «NP V ADV-Middle»: agent=Experiencer |

<!-- .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.

<!-- .note -->
*Sentence 2:* Is he right?

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:2
# text = Is he right?
1	Is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
2	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
3	right	right	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | sand |  |  |  |  | right *property* | tree rules |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Only on a beach

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:o1:1
# text = Only on a beach
1	Only	only	ADV	RB	_	4	advmod	_	_
2	on	on	ADP	IN	_	4	case	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	beach	beach	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
No, water cannot pull apart sand's strongly joined particles

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:o2:1
# text = No, water cannot pull apart sand's strongly joined particles
1	No	no	INTJ	UH	Polarity=Neg	6	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	water	water	NOUN	NN	Number=Sing	6	nsubj	_	_
4	can	can	AUX	MD	VerbForm=Fin	6	aux	_	SpaceAfter=No
5	not	not	PART	RB	Polarity=Neg	6	advmod	_	_
6	pull	pull	VERB	VB	VerbForm=Inf	8	compound	_	_
7	apart	apart	ADV	RB	_	6	advmod	_	_
8	sand	sand	NOUN	NN	Number=Sing	11	nsubj:pass	_	SpaceAfter=No
9	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	aux	_	_
10	strongly	strongly	ADV	RB	_	11	advmod	_	_
11	joined	join	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
12	particles	particle	NOUN	NNS	Number=Plur	11	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **pull apart** | can | water |  |  |  |  | apart *property* | vn slide-11.2 «NP V»: agent=Theme |
| 2 | **join** | present · passive |  | pull sand |  |  |  | strongly *property* | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
Yes, if the water is very cold and you stir it the other way round

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:o3:1
# text = Yes, if the water is very cold and you stir it the other way round
1	Yes	yes	INTJ	UH	Polarity=Pos	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	8	punct	_	_
3	if	if	SCONJ	IN	_	8	mark	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	water	water	NOUN	NN	Number=Sing	8	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
7	very	very	ADV	RB	_	8	advmod	_	_
8	cold	cold	ADJ	JJ	Degree=Pos	0	root	_	_
9	and	and	CCONJ	CC	_	11	cc	_	_
10	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	11	nsubj	_	_
11	stir	stir	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	8	conj	_	_
12	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	obj	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	other	other	ADJ	JJ	Degree=Pos	15	amod	_	_
15	way	way	NOUN	NN	Number=Sing	11	obl:unmarked	_	_
16	round	round	ADV	RB	_	8	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the water |  |  |  |  | cold, round *property* | tree rules |
| 2 | **stir** | present | you | water |  |  |  | the other way *obl:unmarked* | vn amuse-31.1 «NP V NP»: agent=Stimulus it=Experiencer |

### Option 4 {#o4}

<!-- .ven lang=en -->
Yes, after about an hour of stirring

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t10:o4:1
# text = Yes, after about an hour of stirring
1	Yes	yes	INTJ	UH	Polarity=Pos	6	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	6	punct	_	_
3	after	after	ADP	IN	_	6	case	_	_
4	about	about	ADV	RB	_	6	advmod	_	_
5	an	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	hour	hour	NOUN	NN	Number=Sing	0	root	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	stirring	stirring	NOUN	NN	Number=Sing	6	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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- ← previous: [Mixing and dissolving, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/6-mixing-and-dissolving/t9/)
- next →: [Mixing and dissolving, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/6-mixing-and-dissolving/e1/)
- ↑ back to [Mixing and dissolving](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/6-mixing-and-dissolving/)