---
title: A ship has no fresh water but plenty of seawater. What could they do? — Separating mixtures · tree and pragmatics
description: A ship has no fresh water but plenty of seawater. What could they do? Test 5 of lesson 8 «Separating mixtures» 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 5 · Separating mixtures

<!-- .ven lang=en -->
A ship has no fresh water but plenty of seawater. What could they do?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** ship, water · **What happens:** have, do · **To what, where:** fresh water

<!-- .vabout -->
This is test 5 of lesson 8 «Separating mixtures» 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/8-separating-mixtures/#t5).

## The question {#question}

<!-- .note -->
*Sentence 1:* A ship has no fresh water but plenty of seawater.

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:1
# text = A ship has no fresh water but plenty of seawater.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	ship	ship	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	no	no	DET	DT	PronType=Neg	6	det	_	_
5	fresh	fresh	ADJ	JJ	Degree=Pos	6	amod	_	_
6	water	water	NOUN	NN	Number=Sing	3	obj	_	_
7	but	but	CCONJ	CC	_	8	cc	_	_
8	plenty	plenty	NOUN	NN	Number=Sing	6	conj	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	seawater	seawater	NOUN	NN	Number=Sing	8	nmod	_	SpaceAfter=No
11	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | a ship | no fresh water but plenty of seawater |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent water=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.

<!-- .note -->
*Sentence 2:* What could they do?

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:2
# text = What could they do?
1	What	what	PRON	WP	PronType=Int	4	obj	_	_
2	could	could	AUX	MD	VerbForm=Fin	4	aux	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
4	do	do	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | could | water |  |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent what=Eventuality |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Make fresh water by distilling or another desalting method

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:o1:1
# text = Make fresh water by distilling or another desalting method
1	Make	make	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	fresh	fresh	ADJ	JJ	Degree=Pos	3	amod	_	_
3	water	water	NOUN	NN	Number=Sing	1	obj	_	_
4	by	by	SCONJ	IN	_	5	mark	_	_
5	distilling	distil	VERB	VBG	Tense=Pres|VerbForm=Part	1	advcl	_	_
6	or	or	CCONJ	CC	_	9	cc	_	_
7	another	another	DET	DT	PronType=Ind	9	det	_	_
8	desalting	desalting	NOUN	NN	Number=Sing	9	compound	_	_
9	method	method	NOUN	NN	Number=Sing	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | imperative | you *not said here* | fresh water |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset water=Product |
| 2 | **distil** | gerund | you *not said here* |  |  |  |  |  | vn wipe\_manner-10.4.1 «NP V NP.source»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
Filter the seawater through a clean cloth to catch the salt

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:o2:1
# text = Filter the seawater through a clean cloth to catch the salt
1	Filter	filter	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	seawater	seawater	NOUN	NN	Number=Sing	1	obj	_	_
4	through	through	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	clean	clean	ADJ	JJ	Degree=Pos	7	amod	_	_
7	cloth	cloth	NOUN	NN	Number=Sing	1	obl	_	_
8	to	to	PART	TO	_	9	mark	_	_
9	catch	catch	VERB	VB	VerbForm=Inf	1	advcl	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	salt	salt	NOUN	NN	Number=Sing	9	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **filter** | imperative | you *not said here* | the seawater |  | a clean cloth |  |  | vn wipe\_instr-10.4.2 «NP V NP.initial\_location»: agent=Agent seawater=Initial\_Location |
| 2 | **catch** | to-infinitive | you *not said here* | the salt |  |  |  |  | vn get-13.5.1 «NP V NP»: agent=Agent salt=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Freeze it and eat the salt

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:o3:1
# text = Freeze it and eat the salt
1	Freeze	freeze	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	1	obj	_	_
3	and	and	CCONJ	CC	_	4	cc	_	_
4	eat	eat	VERB	VB	Mood=Imp|VerbForm=Fin	1	conj	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	salt	salt	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | imperative | you *not said here* | it |  |  |  |  | vn other\_cos-45.4-1 «NP V NP ADJ»: agent=Patient it=Result |
| 2 | **eat** | infinitive | you *not said here* | the salt |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent salt=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Leave it in a bucket to settle

```conllu
# sent_id = question:chemistry:8-separating-mixtures:t5:o4:1
# text = Leave it in a bucket to settle
1	Leave	leave	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	1	obj	_	_
3	in	in	ADP	IN	_	5	case	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	bucket	bucket	NOUN	NN	Number=Sing	1	obl	_	_
6	to	to	PART	TO	_	7	mark	_	_
7	settle	settle	VERB	VB	VerbForm=Inf	1	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** | imperative | you *not said here* | it |  | a bucket |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent it=Theme in bucket=Location |
| 2 | **settle** | to-infinitive | you *not said here* |  |  |  |  |  | vn correspond-36.1 «NP V»: agent=Agent |

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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.

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