---
title: A bike helmet protects only when it fits: snug, level on the head, a… — Walking, seat belts, buses, airports, bike helme… · tree and pragmatics
description: A bike helmet protects only when it fits: snug, level on the head, about two fingers above the eyebrows, with the strap buckled. Who acts: bike helmet, helmet. A sentence of the lesson «Walking, seat belts, buses, airports, bike helmets, queues and tipping» of the everyday course of Mova's primary s
---

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# Walking, seat belts, buses, airports, bike helmets, queues and tipping, sentence 2

<!-- .ven lang=en -->
A bike helmet protects only when it fits: snug, level on the head, about two fingers above the eyebrows, with the strap buckled.

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**Who acts:** bike helmet, helmet · **What happens:** protect, fit, buckle · **To what, where:** snug, head, strap

<!-- .vabout -->
This is a sentence of the lesson «Walking, seat belts, buses, airports, bike helmets, queues and tipping» 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 (bike helmet, helmet), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:everyday:331-walking-seat-belts-buses-airports-bikes-and-tipping.lesson:2
# text = A bike helmet protects only when it fits: snug, level on the head, about two fingers above the eyebrows, with the strap buckled.
# source = school lesson (ours)
# course = everyday
# lesson = 331-walking-seat-belts-buses-airports-bikes-and-tipping.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	bike	bike	NOUN	NN	Number=Sing	3	compound	_	_
3	helmet	helmet	NOUN	NN	Number=Sing	4	nsubj	_	_
4	protects	protect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	only	only	ADV	RB	_	8	advmod	_	_
6	when	when	ADV	WRB	PronType=Int	8	advmod	_	_
7	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
8	fits	fit	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	_
9	:	:	PUNCT	:	_	10	punct	_	_
10	snug	snug	NOUN	NN	Number=Sing	8	obj	_	_
11	,	,	PUNCT	,	_	12	punct	_	_
12	level	level	NOUN	NN	Number=Sing	10	conj	_	_
13	on	on	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	head	head	NOUN	NN	Number=Sing	10	nmod	_	_
16	,	,	PUNCT	,	_	19	punct	_	_
17	about	about	ADV	RB	_	18	advmod	_	_
18	two	two	NUM	CD	NumForm=Word|NumType=Card	19	nummod	_	_
19	fingers	finger	NOUN	NNS	Number=Plur	10	conj	_	_
20	above	above	ADP	IN	_	22	case	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	eyebrows	eyebrow	NOUN	NNS	Number=Plur	19	nmod	_	_
23	,	,	PUNCT	,	_	26	punct	_	_
24	with	with	ADP	IN	_	26	case	_	_
25	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
26	strap	strap	NOUN	NN	Number=Sing	8	obl	_	_
27	buckled	buckle	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	26	acl	_	_
28	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **protect** | present | a bike helmet |  |  |  |  |  | vn defend-72.3 «NP V S\_ING»: agent=Agent |
| 2 | **fit** | present | helmet | snug and level and two fingers above the eyebrows |  | the head |  | with the strap | vn funnel-9.3-1 «NP V NP PP.trajectory»: agent=Agent snug=Theme on head=Trajectory |
| 3 | **buckle** | participle |  | the strap *not said here* |  |  |  |  | vn tape-22.4 «NP V ADV-Middle»: agent=Patient |

<!-- .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:331-walking-seat-belts-buses-airports-bikes-and-tipping.lesson:2`.

**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 →: [Walking, seat belts, buses, airports,…, 3](https://md.mova.elamur.ai/free/en/corpora/school/everyday/331-walking-seat-belts-buses-airports-bikes-and-tipping/3/)
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