---
title: In hospitals, sealed plastic syringes, gloves and tubes keep medicin… — Plastics: useful and stubborn · tree and pragmatics
description: In hospitals, sealed plastic syringes, gloves and tubes keep medicine and tools free of germs and are used only once. Who acts: sealed plastic syringes. A sentence of the lesson «Plastics: useful and stubborn» of the chemistry course of Mova's primary school with its dependency tree and the pragmati
---

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# Plastics: useful and stubborn, sentence 17

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In hospitals, sealed plastic syringes, gloves and tubes keep medicine and tools free of germs and are used only once.

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**Who acts:** sealed plastic syringes · **What happens:** seal, keep, use · **To what, where:** medicine, hospitals

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This is a sentence of the lesson «Plastics: useful and stubborn» of the chemistry 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 (sealed plastic syringes), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:029-plastics-useful-stubborn.lesson:17
# text = In hospitals, sealed plastic syringes, gloves and tubes keep medicine and tools free of germs and are used only once.
# source = school lesson (ours)
# course = chemistry
# lesson = 029-plastics-useful-stubborn.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	In	in	ADP	IN	_	2	case	_	_
2	hospitals	hospital	NOUN	NNS	Number=Plur	11	obl	_	_
3	,	,	PUNCT	,	_	2	punct	_	_
4	sealed	seal	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	amod	_	_
5	plastic	plastic	ADJ	JJ	Degree=Pos	6	amod	_	_
6	syringes	syringe	NOUN	NNS	Number=Plur	11	nsubj	_	_
7	,	,	PUNCT	,	_	8	punct	_	_
8	gloves	glove	NOUN	NNS	Number=Plur	6	conj	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	tubes	tube	NOUN	NNS	Number=Plur	6	conj	_	_
11	keep	keep	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
12	medicine	medicine	NOUN	NN	Number=Sing	11	obj	_	_
13	and	and	CCONJ	CC	_	14	cc	_	_
14	tools	tool	NOUN	NNS	Number=Plur	12	conj	_	_
15	free	free	ADJ	JJ	Degree=Pos	14	amod	_	_
16	of	of	ADP	IN	_	17	case	_	_
17	germs	germ	NOUN	NNS	Number=Plur	15	obl	_	_
18	and	and	CCONJ	CC	_	20	cc	_	_
19	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	20	aux:pass	_	_
20	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	conj	_	_
21	only	only	ADV	RB	_	22	advmod	_	_
22	once	once	ADV	RB	NumForm=Word|NumType=Mult	20	advmod	_	_
23	.	.	PUNCT	.	_	11	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **seal** | participle |  |  |  |  |  |  | vn tape-22.4 «NP V ADV-Middle»: agent=Patient |
| 2 | **keep** | present | sealed plastic syringes and gloves and tubes | medicine and tools |  | hospitals |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent medicine=Theme in hospital=Location |
| 3 | **use** | present · passive | sealed plastic syringes and gloves and tubes *not said here* |  |  |  |  | once *property* | vn eat-39.1 «NP V» |

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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:chemistry:029-plastics-useful-stubborn.lesson:17`.

**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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- next →: [Plastics: useful and stubborn, 18](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/18/)
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