---
title: A wet cast can rub and infect the skin under it, so a cast must be k… — Helpers in town and building sites · tree and pragmatics
description: A wet cast can rub and infect the skin under it, so a cast must be kept dry. Who acts: wet cast. A sentence of the lesson «Helpers in town and building sites» of the everyday course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Helpers in town and building sites, sentence 19

<!-- .ven lang=en -->
A wet cast can rub and infect the skin under it, so a cast must be kept dry.

<!-- .vintro -->
**Who acts:** wet cast · **What happens:** rub, infect, keep · **To what, where:** skin, cast

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This is a sentence of the lesson «Helpers in town and building sites» of the everyday 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 (wet cast), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:everyday:274-helpers-in-town-and-building-sites.lesson:19
# text = A wet cast can rub and infect the skin under it, so a cast must be kept dry.
# source = school lesson (ours)
# course = everyday
# lesson = 274-helpers-in-town-and-building-sites.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): no change
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	wet	wet	ADJ	JJ	Degree=Pos	3	amod	_	_
3	cast	cast	NOUN	NN	Number=Sing	5	nsubj	_	_
4	can	can	AUX	MD	VerbForm=Fin	5	aux	_	_
5	rub	rub	VERB	VB	VerbForm=Inf	0	root	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	infect	infect	VERB	VB	VerbForm=Inf	5	conj	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	skin	skin	NOUN	NN	Number=Sing	7	obj	_	_
10	under	under	ADP	IN	_	11	case	_	_
11	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	7	obl	_	_
12	,	,	PUNCT	,	_	18	punct	_	_
13	so	so	ADV	RB	_	18	advmod	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	cast	cast	NOUN	NN	Number=Sing	18	nsubj:pass	_	_
16	must	must	AUX	MD	VerbForm=Fin	18	aux	_	_
17	be	be	AUX	VB	VerbForm=Inf	18	aux:pass	_	_
18	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	advcl	_	_
19	dry	dry	ADJ	JJ	Degree=Pos	18	xcomp	_	_
20	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: changed act=assert

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **rub** | can | a wet cast |  |  |  |  |  | vn spray-9.7-1 «NP V PP.destination»: agent=Theme |
| 2 | **infect** | infinitive | a wet cast *not said here* | the skin |  | cast |  |  | vn fill-9.8 «NP V NP»: agent=Theme skin=Destination |
| 3 | **keep** | must · passive |  | a cast |  |  |  | dry *property* | vn keep-15.2 «NP V NP»: subject=Theme |

<!-- .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:everyday:274-helpers-in-town-and-building-sites.lesson:19`.

**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): no change. **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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- ← previous: [Helpers in town and building sites, 18](https://md.mova.elamur.ai/free/en/corpora/school/everyday/274-helpers-in-town-and-building-sites/18/)
- next →: [Helpers in town and building sites, 21](https://md.mova.elamur.ai/free/en/corpora/school/everyday/274-helpers-in-town-and-building-sites/21/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/everyday/274-helpers-in-town-and-building-sites/)