---
title: The layer of air around the Earth, the atmosphere, also keeps us war… — Air and why we need it · tree and pragmatics
description: The layer of air around the Earth, the atmosphere, also keeps us warm and protects us from harmful rays from the Sun. Who acts: layer. A sentence of the lesson «Air and why we need it» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Air and why we need it, sentence 4

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The layer of air around the Earth, the atmosphere, also keeps us warm and protects us from harmful rays from the Sun.

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**Who acts:** layer · **What happens:** keep, protect · **To what, where:** us

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This is a sentence of the lesson «Air and why we need it» 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 (layer), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:017-air-oxygen-carbon-dioxide.lesson:4
# text = The layer of air around the Earth, the atmosphere, also keeps us warm and protects us from harmful rays from the Sun.
# source = school lesson (ours)
# course = world
# lesson = 017-air-oxygen-carbon-dioxide.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): no change
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	layer	layer	NOUN	NN	Number=Sing	13	nsubj	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	air	air	NOUN	NN	Number=Sing	2	nmod	_	_
5	around	around	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	Earth	Earth	PROPN	NNP	Number=Sing	4	nmod	_	_
8	,	,	PUNCT	,	_	10	punct	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	atmosphere	atmosphere	NOUN	NN	Number=Sing	7	appos	_	_
11	,	,	PUNCT	,	_	2	punct	_	_
12	also	also	ADV	RB	_	13	advmod	_	_
13	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
14	us	we	PRON	PRP	Case=Acc|Number=Plur|Person=1|PronType=Prs	13	obj	_	_
15	warm	warm	ADJ	JJ	Degree=Pos	13	xcomp	_	_
16	and	and	CCONJ	CC	_	17	cc	_	_
17	protects	protect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	conj	_	_
18	us	we	PRON	PRP	Case=Acc|Number=Plur|Person=1|PronType=Prs	17	obj	_	_
19	from	from	ADP	IN	_	21	case	_	_
20	harmful	harmful	ADJ	JJ	Degree=Pos	21	amod	_	_
21	rays	ray	NOUN	NNS	Number=Plur	17	obl	_	_
22	from	from	ADP	IN	_	24	case	_	_
23	the	the	DET	DT	Definite=Def|PronType=Art	24	det	_	_
24	Sun.	Sun	PROPN	NNP	Number=Sing	21	nmod	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | the layer of air around the Earth | us |  |  |  | warm *property* | vn keep-15.2 «NP V NP»: agent=Agent we=Theme |
| 2 | **protect** | present | the layer of air around the Earth *not said here* |  | us |  |  | from harmful rays from the Sun. | vn defend-72.3 «NP V NP PP.theme»: agent=Agent we=Beneficiary from ray=Theme |

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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:017-air-oxygen-carbon-dioxide.lesson:4`.

**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): no change. **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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