---
title: A planet has no air at all. What colour is its sky in daylight? — Thinking like an astronomer · tree and pragmatics
description: A planet has no air at all. What colour is its sky in daylight? Test 5 · ★★★ of lesson 10 «Thinking like an astronomer» 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 wrong.
---

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# Test 5 · ★★★ · Thinking like an astronomer

<!-- .ven lang=en -->
A planet has no air at all. What colour is its sky in daylight?

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**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** planet, colour · **What happens:** have, be · **To what, where:** air, all, sky, daylight

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This is test 5 · ★★★ of lesson 10 «Thinking like an astronomer» 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/10-reasoning-about-space/#t5).

## The question {#question}

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*Sentence 1:* A planet has no air at all.

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:1
# text = A planet has no air at all.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	planet	planet	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	5	det	_	_
5	air	air	NOUN	NN	Number=Sing	3	obj	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	all	all	DET	DT	PronType=Tot	5	nmod	_	SpaceAfter=No
8	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | a planet | no air |  | all |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent air=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 colour is its sky in daylight?

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:2
# text = What colour is its sky in daylight?
1	What	what	DET	WDT	PronType=Int	2	det	_	_
2	colour	colour	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	sky	sky	NOUN	NN	Number=Sing	0	root	_	_
6	in	in	ADP	IN	_	7	case	_	_
7	daylight	daylight	NOUN	NN	Number=Sing	5	nmod	_	SpaceAfter=No
8	?	?	PUNCT	.	_	5	punct	_	_
```

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | what colour | colour's sky |  | daylight |  |  | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Blue

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:o1:1
# text = Blue
1	Blue	Blue	ADJ	NNP	Degree=Pos	0	root	_	_
```

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

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Black

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:o2:1
# text = Black
1	Black	Black	PROPN	NNP	Number=Sing	0	root	_	_
```

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

### Option 3 {#o3}

<!-- .ven lang=en -->
Red

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:o3:1
# text = Red
1	Red	red	ADJ	JJ	Degree=Pos	0	root	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
White

```conllu
# sent_id = question:world:10-reasoning-about-space:t5:o4:1
# text = White
1	White	white	ADJ	JJ	Degree=Pos	0	root	_	_
```

<!-- .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.

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- ← previous: [Thinking like an astronomer, test 4](https://md.mova.elamur.ai/free/en/corpora/questions/world/10-reasoning-about-space/t4/)
- next →: [Thinking like an astronomer, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/world/10-reasoning-about-space/t6/)
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