---
title: A worm cut in half does not become two worms; sometimes the head end… — Worms, snails and slugs · tree and pragmatics
description: A worm cut in half does not become two worms; sometimes the head end survives and grows a new tail, but the tail end usually dies. Who acts: worm, head end, tail end. A sentence of the lesson «Worms, snails and slugs» of the biology course of Mova's primary school with its dependency tree and the pr
---

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# Worms, snails and slugs, sentence 6

<!-- .ven lang=en -->
A worm cut in half does not become two worms; sometimes the head end survives and grows a new tail, but the tail end usually dies.

<!-- .vintro -->
**Who acts:** worm, head end, tail end · **What happens:** cut, not become, survive, grow, die · **To what, where:** worm, half, two worms, new tail

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This is a sentence of the lesson «Worms, snails and slugs» 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 (worm, head end, tail end), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:217-worms-snails-and-slugs.lesson:6
# text = A worm cut in half does not become two worms; sometimes the head end survives and grows a new tail, but the tail end usually dies.
# source = school lesson (ours)
# course = biology
# lesson = 217-worms-snails-and-slugs.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): R6-punct-agree ×1, R7-rel-agree ×2
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	worm	worm	NOUN	NN	Number=Sing	8	nsubj	_	_
3	cut	cut	VERB	VBN	Tense=Past|VerbForm=Part	2	acl	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	3	obl	_	_
6	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	aux	_	_
7	not	not	PART	RB	Polarity=Neg	8	advmod	_	_
8	become	become	VERB	VB	VerbForm=Inf	0	root	_	_
9	two	two	NUM	CD	NumForm=Word|NumType=Card	10	nummod	_	_
10	worms	worm	NOUN	NNS	Number=Plur	8	xcomp	_	Agree=R7-rel-agree|Haiku=8:obj
11	;	;	PUNCT	,	_	16	punct	_	_
12	sometimes	sometimes	ADV	RB	PronType=Ind	16	advmod	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	head	head	NOUN	NN	Number=Sing	15	compound	_	_
15	end	end	NOUN	NN	Number=Sing	16	nsubj	_	_
16	survives	survive	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	parataxis	_	Agree=R7-rel-agree|Haiku=8:advcl
17	and	and	CCONJ	CC	_	18	cc	_	_
18	grows	grow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	conj	_	_
19	a	a	DET	DT	Definite=Ind|PronType=Art	21	det	_	_
20	new	new	ADJ	JJ	Degree=Pos	21	amod	_	_
21	tail	tail	NOUN	NN	Number=Sing	18	obj	_	_
22	,	,	PUNCT	,	_	28	punct	_	_
23	but	but	CCONJ	CC	_	28	cc	_	_
24	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
25	tail	tail	NOUN	NN	Number=Sing	26	compound	_	_
26	end	end	NOUN	NN	Number=Sing	28	nsubj	_	_
27	usually	usually	ADV	RB	_	28	advmod	_	_
28	dies	die	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	conj	_	_
29	.	.	PUNCT	.	_	8	punct	_	Agree=R6-punct-agree|Haiku=16: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 | **cut** | participle |  | a worm *not said here* |  | half |  |  | vn amuse-31.1 «NP V ADV-Middle»: agent=Experiencer |
| 2 | **not** **become** | present · do-support | a worm | two worms |  |  |  |  | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |
| 3 | **survive** | present | the head end |  |  |  |  | sometimes *property* | vn exist-47.1-1 «NP V»: agent=Theme |
| 4 | **grow** | present | the head end *not said here* | a new tail |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location tail=Theme |
| 5 | **die** | present | the tail end |  |  |  |  | usually *property* | vn calibratable\_cos-45.6.1 «NP.attribute V»: agent=Attribute |

<!-- .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:217-worms-snails-and-slugs.lesson:6`.

**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): R6-punct-agree ×1, 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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