---
title: Many lizards can drop their tail on purpose; it wriggles to distract… — How animals defend themselves · tree and pragmatics
description: Many lizards can drop their tail on purpose; it wriggles to distract the attacker, and the new tail grows back with cartilage instead of bones; growing a new one costs the lizard a lot of energy. Who acts: Many lizards, tail, new tail, growing. A sentence of the lesson «How animals defend themselves
---

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# How animals defend themselves, sentence 10

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Many lizards can drop their tail on purpose; it wriggles to distract the attacker, and the new tail grows back with cartilage instead of bones; growing a new one costs the lizard a lot of energy.

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**Who acts:** Many lizards, tail, new tail, growing · **What happens:** drop, wriggle, distract, grow back, grow, cost · **To what, where:** tail, purpose, attacker, new one, lot, lizard

<!-- .vabout -->
This is a sentence of the lesson «How animals defend themselves» 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 (Many lizards, tail, new tail, growing), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:053-how-animals-defend-themselves.lesson:10
# text = Many lizards can drop their tail on purpose; it wriggles to distract the attacker, and the new tail grows back with cartilage instead of bones; growing a new one costs the lizard a lot of energy.
# source = school lesson (ours)
# course = biology
# lesson = 053-how-animals-defend-themselves.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): R7-rel-agree ×2
1	Many	many	ADJ	JJ	Degree=Pos	2	amod	_	_
2	lizards	lizard	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	drop	drop	VERB	VB	VerbForm=Inf	0	root	_	_
5	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	tail	tail	NOUN	NN	Number=Sing	4	obj	_	_
7	on	on	ADP	IN	_	8	case	_	_
8	purpose	purpose	NOUN	NN	Number=Sing	4	obl	_	_
9	;	;	PUNCT	:	_	11	punct	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
11	wriggles	wriggle	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	distract	distract	VERB	VB	VerbForm=Inf	11	advcl	_	Agree=R7-rel-agree|Haiku=11:xcomp
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	attacker	attacker	NOUN	NN	Number=Sing	13	obj	_	_
16	,	,	PUNCT	,	_	21	punct	_	_
17	and	and	CCONJ	CC	_	21	cc	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	new	new	ADJ	JJ	Degree=Pos	20	amod	_	_
20	tail	tail	NOUN	NN	Number=Sing	21	nsubj	_	_
21	grows	grow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
22	back	back	ADV	RB	_	21	advmod	_	_
23	with	with	ADP	IN	_	24	case	_	_
24	cartilage	cartilage	NOUN	NN	Number=Sing	21	obl	_	_
25	instead	instead	ADV	RB	ExtPos=ADP	27	case	_	_
26	of	of	ADP	IN	_	25	fixed	_	_
27	bones	bone	NOUN	NNS	Number=Plur	21	obl	_	_
28	;	;	PUNCT	:	_	33	punct	_	_
29	growing	grow	VERB	VBG	VerbForm=Ger	33	csubj	_	_
30	a	a	DET	DT	Definite=Ind|PronType=Art	32	det	_	_
31	new	new	ADJ	JJ	Degree=Pos	32	amod	_	_
32	one	one	NOUN	NN	Number=Sing	29	obj	_	_
33	costs	cost	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
34	the	the	DET	DT	Definite=Def|PronType=Art	35	det	_	_
35	lizard	lizard	NOUN	NN	Number=Sing	33	iobj	_	_
36	a	a	DET	DT	Definite=Ind|PronType=Art	37	det	_	_
37	lot	lot	NOUN	NN	Number=Sing	33	obj	_	_
38	of	of	ADP	IN	_	39	case	_	_
39	energy	energy	NOUN	NN	Number=Sing	37	nmod	_	_
40	.	.	PUNCT	.	_	4	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 | **drop** | can | Many lizards | lizards's tail |  | purpose |  |  | vn put\_direction-9.4 «NP V NP PP.destination»: agent=Agent tail=Theme on purpose=Destination |
| 2 | **wriggle** | present | tail |  |  |  |  |  | vn body\_internal\_motion-49.1 «NP V»: agent=Agent |
| 3 | **distract** | to-infinitive | tail *not said here* | the attacker |  |  |  |  | vn amuse-31.1 «NP V NP»: agent=Stimulus attacker=Experiencer |
| 4 | **grow back** | present | the new tail |  |  |  |  | with cartilage; instead bones | vn appear-48.1.1 «NP V»: agent=Theme |
| 5 | **grow** | gerund |  | a new one |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location one=Theme |
| 6 | **cost** | present | growing | a lot of energy | the lizard |  |  |  | vn cost-54.2 «NP V NP NP»: agent=Theme lizard=Beneficiary lot=Value |

<!-- .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:053-how-animals-defend-themselves.lesson:10`.

**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): R7-rel-agree ×2. **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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