---
title: Sound needs something to travel through: air, water or solids such a… — Sound — vibrations, loudness, pitch and echoes · tree and pragmatics
description: Sound needs something to travel through: air, water or solids such as wood and metal. Who acts: Sound. A sentence of the lesson «Sound — vibrations, loudness, pitch and echoes» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Sound — vibrations, loudness, pitch and echoes, sentence 3

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Sound needs something to travel through: air, water or solids such as wood and metal.

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**Who acts:** Sound · **What happens:** need, travel · **To what, where:** something, air

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This is a sentence of the lesson «Sound — vibrations, loudness, pitch and echoes» 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 (Sound), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:054-sound.lesson:3
# text = Sound needs something to travel through: air, water or solids such as wood and metal.
# source = school lesson (ours)
# course = world
# lesson = 054-sound.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): R5-strong ×1, R6-punct-agree ×1
1	Sound	sound	NOUN	NN	Number=Sing	2	nsubj	_	_
2	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	something	something	PRON	NN	Number=Sing|PronType=Ind	2	obj	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	travel	travel	VERB	VB	VerbForm=Inf	3	acl	_	_
6	through	through	ADP	IN	_	8	case	_	_
7	:	:	PUNCT	:	_	8	punct	_	Agree=R6-punct-agree|Haiku=6:punct
8	air	air	NOUN	NN	Number=Sing	5	obl	_	_
9	,	,	PUNCT	,	_	10	punct	_	_
10	water	water	NOUN	NN	Number=Sing	8	conj	_	Agree=R5-strong|Haiku=5:obl
11	or	or	CCONJ	CC	_	12	cc	_	_
12	solids	solid	NOUN	NNS	Number=Plur	10	conj	_	_
13	such	such	ADJ	JJ	Degree=Pos|ExtPos=ADP	15	case	_	_
14	as	as	ADP	IN	_	13	fixed	_	_
15	wood	wood	NOUN	NN	Number=Sing	12	nmod	_	_
16	and	and	CCONJ	CC	_	17	cc	_	_
17	metal	metal	NOUN	NN	Number=Sing	15	conj	_	_
18	.	.	PUNCT	.	_	2	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 | **need** | present | Sound | something |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot something=Theme |
| 2 | **travel** | to-infinitive | Sound *not said here* | something *not said here* |  | air and water or solids such wood and metal |  |  | vn run-51.3.2-1 «NP V PP.location»: agent=Theme through air=Trajectory |

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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:054-sound.lesson:3`.

**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): R5-strong ×1, R6-punct-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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