---
title: Light travels much faster than sound, so you see lightning before yo… — Weather, storms and the changing climate · tree and pragmatics
description: Light travels much faster than sound, so you see lightning before you hear thunder, and each 3 seconds between them means about 1 kilometre. Who acts: Light, you, 3 seconds. A sentence of the lesson «Weather, storms and the changing climate» of the geography course of Mova's primary school with its 
---

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# Weather, storms and the changing climate, sentence 14

<!-- .ven lang=en -->
Light travels much faster than sound, so you see lightning before you hear thunder, and each 3 seconds between them means about 1 kilometre.

<!-- .vintro -->
**Who acts:** Light, you, 3 seconds · **What happens:** travel, see, hear, mean · **To what, where:** lightning, thunder, 1 kilometre

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This is a sentence of the lesson «Weather, storms and the changing climate» of the geography 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 (Light, you, 3 seconds), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:023-weather-storms-and-the-changing-climate.lesson:14
# text = Light travels much faster than sound, so you see lightning before you hear thunder, and each 3 seconds between them means about 1 kilometre.
# source = school lesson (ours)
# course = geography
# lesson = 023-weather-storms-and-the-changing-climate.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): R7-rel-agree ×1
1	Light	light	NOUN	NN	Number=Sing	2	nsubj	_	_
2	travels	travel	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	much	much	ADV	RB	_	4	advmod	_	_
4	faster	fast	ADV	RBR	Degree=Cmp	2	advmod	_	_
5	than	than	ADP	IN	_	6	case	_	_
6	sound	sound	NOUN	NN	Number=Sing	4	obl	_	_
7	,	,	PUNCT	,	_	10	punct	_	_
8	so	so	ADV	RB	_	10	advmod	_	_
9	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	10	nsubj	_	_
10	see	see	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
11	lightning	lightning	NOUN	NN	Number=Sing	10	obj	_	_
12	before	before	SCONJ	IN	_	14	mark	_	_
13	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	14	nsubj	_	_
14	hear	hear	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	10	advcl	_	_
15	thunder	thunder	NOUN	NN	Number=Sing	14	obj	_	_
16	,	,	PUNCT	,	_	23	punct	_	_
17	and	and	CCONJ	CC	_	23	cc	_	_
18	each	each	DET	DT	PronType=Tot	20	det	_	_
19	3	3	NUM	CD	NumForm=Digit|NumType=Card	20	nummod	_	_
20	seconds	second	NOUN	NNS	Number=Plur	23	nsubj	_	_
21	between	between	ADP	IN	_	22	case	_	_
22	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	20	nmod	_	_
23	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	conj	_	_
24	about	about	ADV	RB	_	25	advmod	_	_
25	1	1	NUM	CD	NumForm=Digit|NumType=Card	26	nummod	_	_
26	kilometre	kilometre	NOUN	NN	Number=Sing	23	obj	_	_
27	.	.	PUNCT	.	_	2	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 | **travel** | present | Light |  |  |  |  | fast *property* | vn run-51.3.2-1 «NP V»: agent=Theme |
| 2 | **see** | present | you | lightning |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer lightning=Stimulus |
| 3 | **hear** | present | you | thunder |  |  |  |  | vn see-30.1-1-1 «NP V S»: agent=Experiencer thunder=Stimulus |
| 4 | **mean** | present | each 3 seconds between ice | 1 kilometre |  |  |  |  | vn intend-61.2-1 «NP V NP»: agent=Agent kilometre=Topic |

<!-- .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:geography:023-weather-storms-and-the-changing-climate.lesson:14`.

**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): 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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