---
title: Bats find their way by echolocation, making clicks and listening to… — Caves: bat clouds, blind fish, the olm, glowworm… · tree and pragmatics
description: Bats find their way by echolocation, making clicks and listening to the echoes, but bats are not blind: many see well, and fruit bats use eyes and noses more than echoes. Who acts: Bats, many, fruit bats. A sentence of the lesson «Caves: bat clouds, blind fish, the olm, glowworms and a sealed cave» 
---

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# Caves: bat clouds, blind fish, the olm, glowworms and a sealed cave, sentence 5

<!-- .ven lang=en -->
Bats find their way by echolocation, making clicks and listening to the echoes, but bats are not blind: many see well, and fruit bats use eyes and noses more than echoes.

<!-- .vintro -->
**Who acts:** Bats, many, fruit bats · **What happens:** find, make, listen, not be, see, use · **To what, where:** way, clicks, eyes

<!-- .vabout -->
This is a sentence of the lesson «Caves: bat clouds, blind fish, the olm, glowworms and a sealed cave» of the biology 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 (Bats, many, fruit bats), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave.lesson:5
# text = Bats find their way by echolocation, making clicks and listening to the echoes, but bats are not blind: many see well, and fruit bats use eyes and noses more than echoes.
# source = school lesson (ours)
# course = biology
# lesson = 179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave.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
1	Bats	bat	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	find	find	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	way	way	NOUN	NN	Number=Sing	2	obj	_	_
5	by	by	ADP	IN	_	6	case	_	_
6	echolocation	echolocation	NOUN	NN	Number=Sing	2	obl	_	_
7	,	,	PUNCT	,	_	8	punct	_	_
8	making	make	VERB	VBG	Tense=Pres|VerbForm=Part	2	advcl	_	_
9	clicks	click	NOUN	NNS	Number=Plur	8	obj	_	_
10	and	and	CCONJ	CC	_	11	cc	_	_
11	listening	listen	VERB	VBG	Tense=Pres|VerbForm=Part	8	conj	_	_
12	to	to	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	echoes	echo	NOUN	NNS	Number=Plur	11	obl	_	_
15	,	,	PUNCT	,	_	20	punct	_	_
16	but	but	CCONJ	CC	_	20	cc	_	_
17	bats	bat	NOUN	NNS	Number=Plur	20	nsubj	_	_
18	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	20	cop	_	_
19	not	not	PART	RB	Polarity=Neg	20	advmod	_	_
20	blind	blind	ADJ	JJ	Degree=Pos	2	conj	_	_
21	:	:	PUNCT	:	_	23	punct	_	_
22	many	many	ADJ	JJ	Degree=Pos	23	nsubj	_	_
23	see	see	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	20	parataxis	_	_
24	well	well	ADV	RB	Degree=Pos	23	advmod	_	_
25	,	,	PUNCT	,	_	29	punct	_	_
26	and	and	CCONJ	CC	_	29	cc	_	_
27	fruit	fruit	NOUN	NN	Number=Sing	28	compound	_	_
28	bats	bat	NOUN	NNS	Number=Plur	29	nsubj	_	_
29	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	23	conj	_	_
30	eyes	eye	NOUN	NNS	Number=Plur	29	obj	_	_
31	and	and	CCONJ	CC	_	32	cc	_	_
32	noses	nose	NOUN	NNS	Number=Plur	30	conj	_	_
33	more	more	ADV	RBR	Degree=Cmp	29	advmod	_	_
34	than	than	ADP	IN	_	35	case	_	_
35	echoes	echo	NOUN	NNS	Number=Plur	33	obl	_	Agree=R5-strong|Haiku=29:obl
36	.	.	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 | **find** | present | Bats | bats's way |  |  |  | by echolocation | vn discover-84 «NP V NP»: agent=Agent way=Topic |
| 2 | **make** | gerund | Bats *not said here* | clicks |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset click=Product |
| 3 | **listen** | gerund | Bats *not said here* |  |  |  |  | to the echoes | vn peer-30.3 «NP V PP.theme»: agent=Agent to echo=Theme |
| 4 | **not** **is** | present | bats |  |  |  |  | blind *property* | tree rules |
| 5 | **see** | present | many |  |  |  |  | well *property* | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 6 | **use** | present | fruit bats | eyes and noses |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent eye=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:biology:179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave.lesson:5`.

**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. **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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- ← previous: [Caves: bat clouds, blind fish, the olm…, 4](https://md.mova.elamur.ai/free/en/corpora/school/biology/179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave/4/)
- next →: [Caves: bat clouds, blind fish, the olm…, 6](https://md.mova.elamur.ai/free/en/corpora/school/biology/179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave/6/)
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