---
title: In the 1790s Lazzaro Spallanzani found that bats with covered eyes s… — Echolocation: how bats see with sound · tree and pragmatics
description: In the 1790s Lazzaro Spallanzani found that bats with covered eyes still dodged threads but bats with blocked ears crashed; only in 1938 did special microphones prove bats use ultrasound. Who acts: Lazzaro, bats, special microphones. A sentence of the lesson «Echolocation: how bats see with sound» o
---

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# Echolocation: how bats see with sound, sentence 14

<!-- .ven lang=en -->
In the 1790s Lazzaro Spallanzani found that bats with covered eyes still dodged threads but bats with blocked ears crashed; only in 1938 did special microphones prove bats use ultrasound.

<!-- .vintro -->
**Who acts:** Lazzaro, bats, special microphones · **What happens:** find, cover, dodge, block, crash, prove · **To what, where:** 1790s, threads, 1938, ultrasound · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «Echolocation: how bats see with sound» 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 (Lazzaro, bats, special microphones), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:229-echolocation-how-bats-see-with-sound.lesson:14
# text = In the 1790s Lazzaro Spallanzani found that bats with covered eyes still dodged threads but bats with blocked ears crashed; only in 1938 did special microphones prove bats use ultrasound.
# source = school lesson (ours)
# course = biology
# lesson = 229-echolocation-how-bats-see-with-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, R7-rel-agree ×1, R8-pos-agree ×1
1	In	in	ADP	IN	_	3	case	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	1790s	1790	NOUN	NNS	Number=Plur|NumForm=Digit|NumType=Card	6	obl	_	_
4	Lazzaro	Lazzaro	PROPN	NNP	Number=Sing	6	nsubj	_	_
5	Spallanzani	Spallanzani	PROPN	NNP	Number=Sing	4	flat	_	_
6	found	find	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
7	that	that	SCONJ	IN	_	13	mark	_	Agree=R5-strong|Haiku=20:mark
8	bats	bat	NOUN	NNS	Number=Plur	13	nsubj	_	_
9	with	with	ADP	IN	_	11	case	_	_
10	covered	cover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	amod	_	Agree=R8-pos-agree|Haiku=11:amod|HaikuPos=ADJ:JJ:Degree=Pos
11	eyes	eye	NOUN	NNS	Number=Plur	8	nmod	_	_
12	still	still	ADV	RB	_	13	advmod	_	_
13	dodged	dodge	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	6	ccomp	_	_
14	threads	thread	NOUN	NNS	Number=Plur	13	obj	_	Agree=R7-rel-agree|Haiku=13:conj
15	but	but	CCONJ	CC	_	20	cc	_	_
16	bats	bat	NOUN	NNS	Number=Plur	20	nsubj	_	_
17	with	with	ADP	IN	_	19	case	_	_
18	blocked	block	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	19	amod	_	_
19	ears	ear	NOUN	NNS	Number=Plur	16	nmod	_	_
20	crashed	crash	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	13	conj	_	_
21	;	;	PUNCT	,	_	6	punct	_	_
22	only	only	ADV	RB	_	24	advmod	_	_
23	in	in	ADP	IN	_	24	case	_	_
24	1938	1938	NUM	CD	NumForm=Digit|NumType=Card	28	obl	_	_
25	did	do	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	28	aux	_	_
26	special	special	ADJ	JJ	Degree=Pos	27	amod	_	_
27	microphones	microphone	NOUN	NNS	Number=Plur	28	nsubj	_	_
28	prove	prove	VERB	VB	VerbForm=Inf	6	parataxis	_	_
29	bats	bat	NOUN	NNS	Number=Plur	30	nsubj	_	_
30	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	28	ccomp	_	_
31	ultrasound	ultrasound	NOUN	NN	Number=Sing	30	obj	_	_
32	.	.	PUNCT	.	_	6	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 | **find** | past | Lazzaro |  |  | the 1790s |  |  | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent clause=Theme |
| 2 | **cover** | participle |  |  |  |  |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme |
| 3 | **dodge** | past | bats with covered eyes | threads |  |  | still |  | vn avoid-52 «NP V NP.location»: agent=Agent thread=Location |
| 4 | **block** | participle |  |  |  |  |  |  | vn forbid-64.4-1 «NP V S\_ING»: agent=Causer |
| 5 | **crash** | past | bats with blocked ears |  |  |  |  |  | vn break-45.1 «NP.patient V»: agent=Patient |
| 6 | **prove** | past · do-support | special microphones |  |  | 1938 |  |  | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent clause=Theme |
| 7 | **use** | present | bats | ultrasound |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent ultrasound=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:229-echolocation-how-bats-see-with-sound.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): R5-strong ×1, R7-rel-agree ×1, R8-pos-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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