---
title: Ships use echoes under water, called sonar, and doctors use very hig… — What sound is: wobbles in the air · tree and pragmatics
description: Ships use echoes under water, called sonar, and doctors use very high sounds, called ultrasound, to see inside the body. Who acts: Ships, echoes, doctors, high sounds. A sentence of the lesson «What sound is: wobbles in the air» of the physics course of Mova's primary school with its dependency tree
---

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# What sound is: wobbles in the air, sentence 13

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Ships use echoes under water, called sonar, and doctors use very high sounds, called ultrasound, to see inside the body.

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**Who acts:** Ships, echoes, doctors, high sounds · **What happens:** use, call, see · **To what, where:** echoes, water, sonar, high sounds, ultrasound, body · **Speech:** someone speaks here

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This is a sentence of the lesson «What sound is: wobbles in the air» of the physics 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 (Ships, echoes, doctors, high sounds), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:017-what-sound-is-wobbles-in-the-air.lesson:13
# text = Ships use echoes under water, called sonar, and doctors use very high sounds, called ultrasound, to see inside the body.
# source = school lesson (ours)
# course = physics
# lesson = 017-what-sound-is-wobbles-in-the-air.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	Ships	ship	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	echoes	echo	NOUN	NNS	Number=Plur	2	obj	_	_
4	under	under	ADP	IN	_	5	case	_	_
5	water	water	NOUN	NN	Number=Sing	2	obl	_	_
6	,	,	PUNCT	,	_	7	punct	_	_
7	called	call	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	acl	_	_
8	sonar	sonar	NOUN	NN	Number=Sing	7	xcomp	_	_
9	,	,	PUNCT	,	_	12	punct	_	_
10	and	and	CCONJ	CC	_	12	cc	_	_
11	doctors	doctor	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
13	very	very	ADV	RB	_	14	advmod	_	_
14	high	high	ADJ	JJ	Degree=Pos	15	amod	_	_
15	sounds	sound	NOUN	NNS	Number=Plur	12	obj	_	_
16	,	,	PUNCT	,	_	17	punct	_	_
17	called	call	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	acl	_	_
18	ultrasound	ultrasound	NOUN	NN	Number=Sing	17	xcomp	_	_
19	,	,	PUNCT	,	_	21	punct	_	_
20	to	to	PART	TO	_	21	mark	_	_
21	see	see	VERB	VB	VerbForm=Inf	12	advcl	_	_
22	inside	inside	ADP	IN	_	24	case	_	_
23	the	the	DET	DT	Definite=Def|PronType=Art	24	det	_	_
24	body	body	NOUN	NN	Number=Sing	21	obl	_	_
25	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- 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 | **use** | present | Ships | echoes |  | water |  |  | vn eat-39.1 «NP V NP»: agent=Agent echo=Patient |
| 2 | **call** | participle | echoes *not said here* | sonar |  |  |  |  | vn initiate\_communication-37.4.2-1 «NP V»: agent=Agent |
| 3 | **use** | present | doctors | high sounds |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent sound=Patient |
| 4 | **call** | participle | high sounds *not said here* | ultrasound |  |  |  |  | vn initiate\_communication-37.4.2-1 «NP V»: agent=Agent |
| 5 | **see** | to-infinitive | doctors *not said here* |  |  | the body |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |

<!-- .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:physics:017-what-sound-is-wobbles-in-the-air.lesson:13`.

**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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