---
title: Vaccines are tested in the lab and then in trials with thousands of… — Vaccinations and why · tree and pragmatics
description: Vaccines are tested in the lab and then in trials with thousands of people before approval, and their safety keeps being watched afterwards. Who acts: safety. A sentence of the lesson «Vaccinations and why» of the medicine course of Mova's primary school with its dependency tree and the pragmatics o
---

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# Vaccinations and why, sentence 16

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Vaccines are tested in the lab and then in trials with thousands of people before approval, and their safety keeps being watched afterwards.

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**Who acts:** safety · **What happens:** test, keep, watch · **To what, where:** Vaccines, lab

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This is a sentence of the lesson «Vaccinations and why» 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 (safety), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:029-vaccinations-and-why.lesson:16
# text = Vaccines are tested in the lab and then in trials with thousands of people before approval, and their safety keeps being watched afterwards.
# source = school lesson (ours)
# course = medicine
# lesson = 029-vaccinations-and-why.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	Vaccines	vaccine	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	tested	test	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	in	in	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	lab	lab	NOUN	NN	Number=Sing	3	obl	_	_
7	and	and	CCONJ	CC	_	10	cc	_	_
8	then	then	ADV	RB	PronType=Dem	10	advmod	_	_
9	in	in	ADP	IN	_	10	case	_	_
10	trials	trial	NOUN	NNS	Number=Plur	3	conj	_	_
11	with	with	ADP	IN	_	12	case	_	_
12	thousands	thousand	NOUN	NNS	Number=Plur	10	nmod	_	_
13	of	of	ADP	IN	_	14	case	_	_
14	people	people	NOUN	NNS	Number=Plur	12	nmod	_	_
15	before	before	ADP	IN	_	16	case	_	_
16	approval	approval	NOUN	NN	Number=Sing	10	nmod	_	_
17	,	,	PUNCT	,	_	21	punct	_	_
18	and	and	CCONJ	CC	_	21	cc	_	_
19	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	20	nmod:poss	_	_
20	safety	safety	NOUN	NN	Number=Sing	21	nsubj	_	_
21	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
22	being	be	AUX	VBG	Tense=Pres|VerbForm=Part	23	aux:pass	_	_
23	watched	watch	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	21	xcomp	_	_
24	afterwards	afterwards	ADV	RB	_	23	advmod	_	_
25	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **test** | present · passive |  | Vaccines |  | the lab |  |  | vn assessment-34.1 «NP V NP»: subject=Theme |
| 2 | **keep** | present | Vaccines's safety |  |  |  |  |  | tree rules |
| 3 | **watch** | gerund · passive | Vaccines's safety *not said here* |  |  |  |  | afterwards *property* | vn search-35.2 «NP V PP.location» |

<!-- .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:medicine:029-vaccinations-and-why.lesson:16`.

**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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- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/medicine/29-vaccinations-and-why/)