---
title: A blister protects damaged skin while new skin grows, so it is best… — Burns, sunburn and stings · tree and pragmatics
description: A blister protects damaged skin while new skin grows, so it is best left alone; popping it can let in germs. Who acts: blister, new skin. A sentence of the lesson «Burns, sunburn and stings» of the medicine course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Burns, sunburn and stings, sentence 7

<!-- .ven lang=en -->
A blister protects damaged skin while new skin grows, so it is best left alone; popping it can let in germs.

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**Who acts:** blister, new skin · **What happens:** protect, damage, grow, leave, pop, let · **To what, where:** damaged skin, skin, germs

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This is a sentence of the lesson «Burns, sunburn and stings» of the medicine 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 (blister, new skin), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:006-burns-sunburn-and-stings.lesson:7
# text = A blister protects damaged skin while new skin grows, so it is best left alone; popping it can let in germs.
# source = school lesson (ours)
# course = medicine
# lesson = 006-burns-sunburn-and-stings.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): R2-punct-next ×1, R5-strong ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	blister	blister	NOUN	NN	Number=Sing	3	nsubj	_	_
3	protects	protect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	damaged	damage	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	amod	_	_
5	skin	skin	NOUN	NN	Number=Sing	3	obj	_	_
6	while	while	SCONJ	IN	_	9	mark	_	_
7	new	new	ADJ	JJ	Degree=Pos	8	amod	_	_
8	skin	skin	NOUN	NN	Number=Sing	9	nsubj	_	_
9	grows	grow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
10	,	,	PUNCT	,	_	15	punct	_	Agree=R2-punct-next|Haiku=9:punct
11	so	so	ADV	RB	_	15	advmod	_	_
12	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	15	nsubj:pass	_	_
13	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	aux:pass	_	_
14	best	good	ADV	RBS	Degree=Sup	15	advmod	_	_
15	left	leave	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	conj	_	_
16	alone	alone	ADJ	JJ	Degree=Pos	15	xcomp	_	_
17	;	;	PUNCT	,	_	18	punct	_	_
18	popping	pop	VERB	VBG	Tense=Pres|VerbForm=Part	3	conj	_	_
19	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	obj	_	Agree=R5-strong|Haiku=21:nsubj
20	can	can	AUX	MD	VerbForm=Fin	21	aux	_	_
21	let	let	VERB	VB	VerbForm=Inf	18	ccomp	_	_
22	in	in	ADP	IN	_	23	case	_	_
23	germs	germ	NOUN	NNS	Number=Plur	21	obl	_	_
24	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: neg
- teacher: changed polarity=neg

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **protect** | present | a blister | damaged skin |  |  |  |  | vn defend-72.3 «NP V NP»: agent=Agent skin=Beneficiary |
| 2 | **damage** | participle |  |  |  |  |  |  | vn destroy-44 «NP V NP»: agent=Agent |
| 3 | **grow** | present | new skin |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 4 | **leave** | present · passive |  | skin |  |  |  | alone, good *property* | vn keep-15.2 «NP V NP»: subject=Theme |
| 5 | **pop** | gerund | a blister *not said here* | skin |  |  |  |  | tree rules |
| 6 | **let** | can | a blister *not said here* |  |  | germs |  |  | vn give-13.1-1 «NP V PP.recipient»: agent=Agent |

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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:medicine:006-burns-sunburn-and-stings.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): R2-punct-next ×1, R5-strong ×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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