---
title: A hurricane spins because the air rushing in towards its middle is t… — Storms: thunder, lightning, hurricanes and torna… · tree and pragmatics
description: A hurricane spins because the air rushing in towards its middle is turned by the spinning of the Earth. Who acts: hurricane, air, spinning. A sentence of the lesson «Storms: thunder, lightning, hurricanes and tornadoes» of the world course of Mova's primary school with its dependency tree and the pr
---

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# Storms: thunder, lightning, hurricanes and tornadoes, sentence 12

<!-- .ven lang=en -->
A hurricane spins because the air rushing in towards its middle is turned by the spinning of the Earth.

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**Who acts:** hurricane, air, spinning · **What happens:** spin, rush, turn · **To what, where:** middle, air, Earth

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This is a sentence of the lesson «Storms: thunder, lightning, hurricanes and tornadoes» 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 (hurricane, air, spinning), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:068-storms-and-wild-winds.lesson:12
# text = A hurricane spins because the air rushing in towards its middle is turned by the spinning of the Earth.
# source = school lesson (ours)
# course = world
# lesson = 068-storms-and-wild-winds.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	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	hurricane	hurricane	NOUN	NN	Number=Sing	3	nsubj	_	_
3	spins	spin	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	because	because	SCONJ	IN	_	13	mark	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	air	air	NOUN	NN	Number=Sing	13	nsubj:pass	_	_
7	rushing	rush	VERB	VBG	VerbForm=Ger	6	acl	_	_
8	in	in	ADP	IN	_	11	case	_	_
9	towards	towards	ADP	IN	_	11	case	_	_
10	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	middle	middle	NOUN	NN	Number=Sing	7	obl	_	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	aux:pass	_	_
13	turned	turn	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
14	by	by	ADP	IN	_	16	case	_	_
15	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
16	spinning	spin	NOUN	NN	Number=Sing	13	obl:agent	_	_
17	of	of	ADP	IN	_	19	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	Earth	Earth	PROPN	NNP	Number=Sing	16	nmod	_	_
20	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **spin** | present | a hurricane |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 2 | **rush** | gerund | the air *not said here* |  |  | hurricane's middle |  |  | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme in middle=Trajectory |
| 3 | **turn** | present · passive | the spinning of the Earth | the air |  |  |  |  | vn roll-51.3.1 «NP V NP.theme»: agent=Agent subject=Theme |
| 4 | **spin** |  |  | the Earth |  |  |  |  | nom spin «event transitive»: of=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.

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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:068-storms-and-wild-winds.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): 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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