---
title: Identify the reason for which guinea pigs ought to be kept at least… — Guinea pigs, hamsters and fish · tree and pragmatics
description: Identify the reason for which guinea pigs ought to be kept at least in pairs. Exam question 2 of lesson 63 «Guinea pigs, hamsters and fish» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Exam question 2 · Guinea pigs, hamsters and fish

<!-- .ven lang=en -->
Identify the reason for which guinea pigs ought to be kept at least in pairs.

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** identify, keep · **To what, where:** reason, guinea pigs, least

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This is exam question 2 of lesson 63 «Guinea pigs, hamsters and fish» of the everyday course of Mova's primary school, asked in stiff, formal language. 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/everyday/63-guinea-pigs-hamsters-and-fish/#e2).

## The question {#question}

```conllu
# sent_id = question:everyday:63-guinea-pigs-hamsters-and-fish:e2:1
# text = Identify the reason for which guinea pigs ought to be kept at least in pairs.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	which	which	PRON	WDT	PronType=Rel	11	obl	_	_
6	guinea	guinea	NOUN	NN	Number=Sing	7	compound	_	_
7	pigs	pig	NOUN	NNS	Number=Plur	11	nsubj:pass	_	_
8	ought	ought	AUX	MD	VerbForm=Fin	11	aux	_	_
9	to	to	PART	TO	_	11	mark	_	_
10	be	be	AUX	VB	VerbForm=Inf	11	aux:pass	_	_
11	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	acl:relcl	_	_
12	at	at	ADP	IN	_	13	case	_	_
13	least	least	ADJ	JJS	Degree=Sup	11	obl	_	_
14	in	in	ADP	IN	_	15	case	_	_
15	pairs	pair	NOUN	NNS	Number=Plur	11	obl	_	SpaceAfter=No
16	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the reason |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme |
| 2 | **keep** | ought · passive | you *not said here* | guinea pigs |  | least |  | for the reason; in pairs | vn keep-15.2 «NP V NP PP.location»: subject=Theme at least=Location |

<!-- .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.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
They fight when kept alone

```conllu
# sent_id = question:everyday:63-guinea-pigs-hamsters-and-fish:e2:o1:1
# text = They fight when kept alone
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	fight	fight	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	when	when	SCONJ	WRB	_	4	mark	_	_
4	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	advcl	_	_
5	alone	alone	ADV	RB	_	4	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fight** | present | They |  |  |  |  |  | vn battle-36.4-1 «NP V»: agent=Agent |
| 2 | **keep** | participle | They *not said here* |  |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
They require each other for warmth only

```conllu
# sent_id = question:everyday:63-guinea-pigs-hamsters-and-fish:e2:o2:1
# text = They require each other for warmth only
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	require	require	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	each	each	DET	DT	ExtPos=PRON|PronType=Rcp	2	obj	_	_
4	other	other	ADJ	JJ	Degree=Pos	3	fixed	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	warmth	warmth	NOUN	NN	Number=Sing	2	obl	_	_
7	only	only	ADV	RB	_	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **require** | present | They | each |  |  |  | for warmth | vn require-103-1 «NP V NP»: agent=Theme each=Precondition |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
They are herd animals

```conllu
# sent_id = question:everyday:63-guinea-pigs-hamsters-and-fish:e2:o3:1
# text = They are herd animals
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	herd	herd	NOUN	NN	Number=Sing	4	compound	_	_
4	animals	animal	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | herd animals |  |  |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Single guinea pigs cannot eat

```conllu
# sent_id = question:everyday:63-guinea-pigs-hamsters-and-fish:e2:o4:1
# text = Single guinea pigs cannot eat
1	Single	single	ADJ	JJ	Degree=Pos	3	amod	_	_
2	guinea	guinea	NOUN	NN	Number=Sing	3	compound	_	_
3	pigs	pig	NOUN	NNS	Number=Plur	6	nsubj	_	_
4	can	can	AUX	MD	VerbForm=Fin	6	aux	_	SpaceAfter=No
5	not	not	PART	RB	Polarity=Neg	6	advmod	_	_
6	eat	eat	VERB	VB	VerbForm=Inf	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **eat** | can | Single guinea pigs |  |  |  |  |  | vn eat-39.1-1 «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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