---
title: Before shedding, a snake's eyes turn cloudy as the old skin over the… — The reptile house: snakes · tree and pragmatics
description: Before shedding, a snake's eyes turn cloudy as the old skin over them loosens; snakes grow all their lives, but the outer skin cannot stretch, so they peel off the old skin whole, often inside out, eye caps and all. Who acts: eyes, old skin, snakes, outer skin. A sentence of the lesson «The reptile 
---

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# The reptile house: snakes, sentence 7

<!-- .ven lang=en -->
Before shedding, a snake's eyes turn cloudy as the old skin over them loosens; snakes grow all their lives, but the outer skin cannot stretch, so they peel off the old skin whole, often inside out, eye caps and all.

<!-- .vintro -->
**Who acts:** eyes, old skin, snakes, outer skin · **What happens:** shed, turn, loosen, grow, not stretch, peel off · **To what, where:** lives, old skin

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This is a sentence of the lesson «The reptile house: snakes» 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 (eyes, old skin, snakes, outer skin), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:087-reptile-house-snakes.lesson:7
# text = Before shedding, a snake's eyes turn cloudy as the old skin over them loosens; snakes grow all their lives, but the outer skin cannot stretch, so they peel off the old skin whole, often inside out, eye caps and all.
# source = school lesson (ours)
# course = biology
# lesson = 087-reptile-house-snakes.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 ×3, R7-rel-agree ×5
1	Before	before	SCONJ	IN	_	2	mark	_	_
2	shedding	shed	VERB	VBG	Tense=Pres|VerbForm=Part	8	advcl	_	_
3	,	,	PUNCT	,	_	2	punct	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	snake	snake	NOUN	NN	Number=Sing	7	nmod:poss	_	_
6	's	's	PART	POS	_	5	case	_	_
7	eyes	eye	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	turn	turn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	cloudy	cloudy	ADJ	JJ	Degree=Pos	8	xcomp	_	_
10	as	as	SCONJ	IN	_	16	mark	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	old	old	ADJ	JJ	Degree=Pos	13	amod	_	_
13	skin	skin	NOUN	NN	Number=Sing	16	nsubj	_	_
14	over	over	ADP	IN	_	15	case	_	_
15	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	13	nmod	_	_
16	loosens	loosen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	advcl	_	Agree=R5-strong|Haiku=9:advcl
17	;	;	PUNCT	,	_	19	punct	_	_
18	snakes	snake	NOUN	NNS	Number=Plur	19	nsubj	_	_
19	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	parataxis	_	Agree=R7-rel-agree|Haiku=8:conj
20	all	all	DET	PDT	PronType=Tot	22	det:predet	_	Agree=R7-rel-agree|Haiku=22:advmod|HaikuPos=ADV:RB:_
21	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	22	nmod:poss	_	_
22	lives	life	NOUN	NNS	Number=Plur	19	obj	_	Agree=R7-rel-agree|Haiku=19:obl
23	,	,	PUNCT	,	_	30	punct	_	_
24	but	but	CCONJ	CC	_	30	cc	_	_
25	the	the	DET	DT	Definite=Def|PronType=Art	27	det	_	_
26	outer	outer	ADJ	JJ	Degree=Pos	27	amod	_	_
27	skin	skin	NOUN	NN	Number=Sing	30	nsubj	_	_
28	can	can	AUX	MD	VerbForm=Fin	30	aux	_	_
29	not	not	PART	RB	Polarity=Neg	30	advmod	_	_
30	stretch	stretch	VERB	VB	VerbForm=Inf	8	conj	_	_
31	,	,	PUNCT	,	_	34	punct	_	_
32	so	so	ADV	RB	_	34	advmod	_	_
33	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	34	nsubj	_	_
34	peel	peel	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	30	conj	_	_
35	off	off	ADP	RP	_	34	compound:prt	_	Agree=R5-strong|Haiku=38:case|HaikuPos=ADP:IN:_
36	the	the	DET	DT	Definite=Def|PronType=Art	38	det	_	_
37	old	old	ADJ	JJ	Degree=Pos	38	amod	_	_
38	skin	skin	NOUN	NN	Number=Sing	34	obj	_	Agree=R7-rel-agree|Haiku=34:obl
39	whole	whole	ADJ	JJ	Degree=Pos	34	xcomp	_	Agree=R7-rel-agree|Haiku=34:amod
40	,	,	PUNCT	,	_	43	punct	_	_
41	often	often	ADV	RB	_	43	advmod	_	_
42	inside	inside	ADV	RB	_	43	advmod	_	_
43	out	out	ADV	RB	_	34	advmod	_	_
44	,	,	PUNCT	,	_	46	punct	_	_
45	eye	eye	NOUN	NN	Number=Sing	46	compound	_	_
46	caps	cap	NOUN	NNS	Number=Plur	43	obl	_	_
47	and	and	CCONJ	CC	_	48	cc	_	_
48	all	all	DET	DT	PronType=Tot	46	conj	_	Agree=R5-strong|Haiku=43:conj|HaikuPos=PRON:DT:PronType=Tot
49	.	.	PUNCT	.	_	8	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: narrate
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shed** | gerund | a snake's eyes *not said here* |  |  |  |  |  | vn substance\_emission-43.4-1 «NP V»: agent=Source |
| 2 | **turn** | present | a snake's eyes |  |  |  |  | cloudy *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 3 | **loosen** | present | the old skin over eyes |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 4 | **grow** | present | snakes | eyes's lives |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location life=Theme |
| 5 | **not** **stretch** | can | the outer skin |  |  |  |  |  | vn bend-45.2 «NP.patient V»: agent=Patient |
| 6 | **peel off** | present | eyes *= eye* | the old skin |  |  |  | out, whole *property* | vn pit-10.7 «NP V NP»: agent=Agent skin=Source |

<!-- .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:087-reptile-house-snakes.lesson:7`.

**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 ×3, R7-rel-agree ×5. **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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