---
title: A bat has a body, two wings and two feet. Five bats hang from a cave… — Myth check: are bats blind? · tree and pragmatics
description: A bat has a body, two wings and two feet. Five bats hang from a cave roof. How many wings? Test 5 · ★★ of lesson 153 «Myth check: are bats blind?» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 5 · ★★ · Myth check: are bats blind?

<!-- .ven lang=en -->
A bat has a body, two wings and two feet. Five bats hang from a cave roof. How many wings?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** bat, Five bats · **What happens:** have, hang · **To what, where:** body, cave roof

<!-- .vabout -->
This is test 5 · ★★ of lesson 153 «Myth check: are bats blind?» of the biology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/153-are-bats-blind/#t5).

## The question {#question}

<!-- .note -->
*Sentence 1:* A bat has a body, two wings and two feet.

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:1
# text = A bat has a body, two wings and two feet.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	bat	bat	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	body	body	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	8	punct	_	_
7	two	two	NUM	CD	NumForm=Word|NumType=Card	8	nummod	_	_
8	wings	wing	NOUN	NNS	Number=Plur	5	conj	_	_
9	and	and	CCONJ	CC	_	11	cc	_	_
10	two	two	NUM	CD	NumForm=Word|NumType=Card	11	nummod	_	_
11	feet	foot	NOUN	NNS	Number=Plur	5	conj	_	SpaceAfter=No
12	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | a bat | a body and two wings and two feet |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent body=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.

<!-- .note -->
*Sentence 2:* Five bats hang from a cave roof.

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:2
# text = Five bats hang from a cave roof.
1	Five	five	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	bats	bat	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	hang	hang	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	from	from	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	cave	cave	NOUN	NN	Number=Sing	7	compound	_	_
7	roof	roof	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
8	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hang** | present | Five bats |  |  | a cave roof |  |  | vn assuming\_position-50 «NP V»: agent=Agent |

<!-- .note -->
*Sentence 3:* How many wings?

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:3
# text = How many wings?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	many	many	ADJ	JJ	Degree=Pos	3	amod	_	_
3	wings	wing	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
15

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:o1:1
# text = 15
1	15	15	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
10

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:o2:1
# text = 10
1	10	10	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
20

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:o3:1
# text = 20
1	20	20	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
5

```conllu
# sent_id = question:biology:153-are-bats-blind:t5:o4:1
# text = 5
1	5	5	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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- ← previous: [Myth check: are bats blind?, test 4](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t4/)
- next →: [Myth check: are bats blind?, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t6/)
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