---
title: The Moon has no air, so its sky is black even in the daytime. — Thinking like an astronomer · tree and pragmatics
description: The Moon has no air, so its sky is black even in the daytime. Who acts: Moon, sky. A sentence of the lesson «Thinking like an astronomer» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Thinking like an astronomer, sentence 12

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The Moon has no air, so its sky is black even in the daytime.

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**Who acts:** Moon, sky · **What happens:** have, be · **To what, where:** air, daytime

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This is a sentence of the lesson «Thinking like an astronomer» of the world course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Moon, sky), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:010-reasoning-about-space.lesson:12
# text = The Moon has no air, so its sky is black even in the daytime.
# source = school lesson (ours)
# course = world
# lesson = 010-reasoning-about-space.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R2-punct-next ×1, R7-rel-agree ×1
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Moon	Moon	PROPN	NNP	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	,	,	PUNCT	,	_	11	punct	_	Agree=R2-punct-next|Haiku=3:punct
7	so	so	ADV	RB	_	11	advmod	_	_
8	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	9	nmod:poss	_	_
9	sky	sky	NOUN	NN	Number=Sing	11	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	cop	_	_
11	black	black	ADJ	JJ	Degree=Pos	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
12	even	even	ADV	RB	_	15	advmod	_	_
13	in	in	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	daytime	daytime	NOUN	NN	Number=Sing	11	obl	_	_
16	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | the Moon | no air |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent air=Patient |
| 2 | **is** | present | Moon's sky |  |  | the daytime |  | black *property* | tree rules |

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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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:world:010-reasoning-about-space.lesson:12`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R2-punct-next ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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