---
title: Why does a cat need at least a little light to see in a dark room? — Light, shadows and colours · tree and pragmatics
description: Why does a cat need at least a little light to see in a dark room? Test 6 · ★ of lesson 53 «Light, shadows and colours» of the world 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 6 · ★ · Light, shadows and colours

<!-- .ven lang=en -->
Why does a cat need at least a little light to see in a dark room?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** cat · **What happens:** need, see · **To what, where:** little light, least, dark room

<!-- .vabout -->
This is test 6 · ★ of lesson 53 «Light, shadows and colours» of the world 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/world/53-light/#t6).

## The question {#question}

```conllu
# sent_id = question:world:53-light:t6:1
# text = Why does a cat need at least a little light to see in a dark room?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	cat	cat	NOUN	NN	Number=Sing	5	nsubj	_	_
5	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	least	least	ADJ	JJS	Degree=Sup	5	obl	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
9	little	little	ADJ	JJ	Degree=Pos	10	amod	_	_
10	light	light	NOUN	NN	Number=Sing	5	obj	_	_
11	to	to	PART	TO	_	12	mark	_	_
12	see	see	VERB	VB	VerbForm=Inf	10	acl	_	_
13	in	in	ADP	IN	_	16	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	16	det	_	_
15	dark	dark	ADJ	JJ	Degree=Pos	16	amod	_	_
16	room	room	NOUN	NN	Number=Sing	12	obl	_	SpaceAfter=No
17	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present · do-support | a cat | a little light |  | least |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot light=Theme |
| 2 | **see** | to-infinitive | a cat *not said here* | a little light *not said here* |  | a dark room |  |  | vn comprehend-87.2-1-1 «NP V»: 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.

## The options {#options}

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

<!-- .ven lang=en -->
Seeing needs light entering the eyes

```conllu
# sent_id = question:world:53-light:t6:o1:1
# text = Seeing needs light entering the eyes
1	Seeing	see	VERB	VBG	VerbForm=Ger	2	nsubj	_	_
2	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	light	light	NOUN	NN	Number=Sing	2	obj	_	_
4	entering	enter	VERB	VBG	VerbForm=Ger	3	acl	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	eyes	eye	NOUN	NNS	Number=Plur	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | gerund |  |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 2 | **need** | present |  | light |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot light=Theme |
| 3 | **enter** | gerund | light *not said here* | the eyes |  |  |  |  | vn escape-51.1-1-2 «NP V NP»: agent=Theme eye=Destination |

### Option 2 {#o2}

<!-- .ven lang=en -->
Darkness hides objects completely from all animals

```conllu
# sent_id = question:world:53-light:t6:o2:1
# text = Darkness hides objects completely from all animals
1	Darkness	darkness	NOUN	NN	Number=Sing	2	nsubj	_	_
2	hides	hide	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	objects	object	NOUN	NNS	Number=Plur	2	obj	_	_
4	completely	completely	ADV	RB	_	2	advmod	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	all	all	DET	DT	PronType=Tot	7	det	_	_
7	animals	animal	NOUN	NNS	Number=Plur	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hide** | present | Darkness | objects |  |  |  | from all animals; completely *property* | vn concealment-16-1 «NP V NP PP.beneficiary»: agent=Agent object=Patient from animal=Beneficiary |

### Option 3 {#o3}

<!-- .ven lang=en -->
Cats see using heat only

```conllu
# sent_id = question:world:53-light:t6:o3:1
# text = Cats see using heat only
1	Cats	cat	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	see	see	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	using	use	VERB	VBG	VerbForm=Ger	2	xcomp	_	_
4	heat	heat	NOUN	NN	Number=Sing	3	obj	_	_
5	only	only	ADV	RB	_	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | present | Cats |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V S\_ING»: agent=Experiencer clause=Stimulus |
| 2 | **use** | gerund | Cats *not said here* | heat |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent heat=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Cats make light with their eyes

```conllu
# sent_id = question:world:53-light:t6:o4:1
# text = Cats make light with their eyes
1	Cats	cat	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	light	light	NOUN	NN	Number=Sing	2	obj	_	_
4	with	with	ADP	IN	_	6	case	_	_
5	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	eyes	eye	NOUN	NNS	Number=Plur	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Cats | light |  |  |  | with Cats's eyes | vn build-26.1-1 «NP V NP»: agent=Agent light=Product |

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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: [Light, shadows and colours, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/world/53-light/t5/)
- next →: [Light, shadows and colours, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/world/53-light/t7/)
- ↑ back to [Light, shadows and colours](https://md.mova.elamur.ai/free/en/corpora/questions/world/53-light/)