---
title: A bat's wing is its hand: long finger bones hold out thin stretchy s… — Myth check: are bats blind? · tree and pragmatics
description: A bat's wing is its hand: long finger bones hold out thin stretchy skin, and the thumb is a little free hook. Who acts: wing, long finger bones, thumb. A sentence of the lesson «Myth check: are bats blind?» of the biology course of Mova's primary school with its dependency tree and the pragmatics of
---

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# Myth check: are bats blind?, sentence 11

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A bat's wing is its hand: long finger bones hold out thin stretchy skin, and the thumb is a little free hook.

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**Who acts:** wing, long finger bones, thumb · **What happens:** be, hold out · **To what, where:** hand, thin stretchy skin, little free hook

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This is a sentence of the lesson «Myth check: are bats blind?» 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 (wing, long finger bones, thumb), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:153-are-bats-blind.lesson:11
# text = A bat's wing is its hand: long finger bones hold out thin stretchy skin, and the thumb is a little free hook.
# source = school lesson (ours)
# course = biology
# lesson = 153-are-bats-blind.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): R1-cc-next ×1, R7-rel-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	bat	bat	NOUN	NN	Number=Sing	4	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	wing	wing	NOUN	NN	Number=Sing	7	nsubj	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
6	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	hand	hand	NOUN	NN	Number=Sing	0	root	_	_
8	:	:	PUNCT	:	_	12	punct	_	_
9	long	long	ADJ	JJ	Degree=Pos	11	amod	_	_
10	finger	finger	NOUN	NN	Number=Sing	11	compound	_	_
11	bones	bone	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	hold	hold	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	conj	_	_
13	out	out	ADP	RP	_	12	compound:prt	_	_
14	thin	thin	ADJ	JJ	Degree=Pos	16	amod	_	_
15	stretchy	stretchy	ADJ	JJ	Degree=Pos	16	amod	_	_
16	skin	skin	NOUN	NN	Number=Sing	12	obj	_	Agree=R7-rel-agree|Haiku=12:obl
17	,	,	PUNCT	,	_	12	punct	_	_
18	and	and	CCONJ	CC	_	25	cc	_	Agree=R1-cc-next|Haiku=12:cc
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	thumb	thumb	NOUN	NN	Number=Sing	25	nsubj	_	_
21	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	25	cop	_	_
22	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	_	_
23	little	little	ADJ	JJ	Degree=Pos	25	amod	_	_
24	free	free	ADJ	JJ	Degree=Pos	25	amod	_	_
25	hook	hook	NOUN	NN	Number=Sing	12	conj	_	_
26	.	.	PUNCT	.	_	7	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | a bat's wing | bat's hand |  |  |  |  | tree rules |
| 2 | **hold out** | present | long finger bones | thin stretchy skin |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent skin=Theme |
| 3 | **is a** | present | the thumb | a little free hook |  |  |  |  | tree rules |

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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:biology:153-are-bats-blind.lesson:11`.

**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): R1-cc-next ×1, R7-rel-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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