---
title: A good helmet greatly lowers the chance of a serious head injury whe… — Bikes, scooters and car parks · tree and pragmatics
description: A good helmet greatly lowers the chance of a serious head injury when you fall off a bike or scooter. Who acts: good helmet, you, serious head injury. A sentence of the lesson «Bikes, scooters and car parks» of the everyday course of Mova's primary school with its dependency tree and the pragmatics 
---

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# Bikes, scooters and car parks, sentence 18

<!-- .ven lang=en -->
A good helmet greatly lowers the chance of a serious head injury when you fall off a bike or scooter.

<!-- .vintro -->
**Who acts:** good helmet, you, serious head injury · **What happens:** lower, fall off, chance · **To what, where:** chance, bike

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This is a sentence of the lesson «Bikes, scooters and car parks» 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 (good helmet, you, serious head injury), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:everyday:272-bikes-scooters-and-car-parks.lesson:18
# text = A good helmet greatly lowers the chance of a serious head injury when you fall off a bike or scooter.
# source = school lesson (ours)
# course = everyday
# lesson = 272-bikes-scooters-and-car-parks.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): R7-rel-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	good	good	ADJ	JJ	Degree=Pos	3	amod	_	_
3	helmet	helmet	NOUN	NN	Number=Sing	5	nsubj	_	_
4	greatly	greatly	ADV	RB	_	5	advmod	_	_
5	lowers	lower	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	chance	chance	NOUN	NN	Number=Sing	5	obj	_	_
8	of	of	ADP	IN	_	12	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
10	serious	serious	ADJ	JJ	Degree=Pos	12	amod	_	_
11	head	head	NOUN	NN	Number=Sing	12	compound	_	_
12	injury	injury	NOUN	NN	Number=Sing	7	nmod	_	_
13	when	when	ADV	WRB	PronType=Int	15	advmod	_	_
14	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	15	nsubj	_	_
15	fall	fall	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
16	off	off	ADP	RP	_	15	compound:prt	_	_
17	a	a	DET	DT	Definite=Ind|PronType=Art	18	det	_	_
18	bike	bike	NOUN	NN	Number=Sing	15	obl	_	Agree=R7-rel-agree|Haiku=15:obj
19	or	or	CCONJ	CC	_	20	cc	_	_
20	scooter	scooter	NOUN	NN	Number=Sing	18	conj	_	_
21	.	.	PUNCT	.	_	5	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 | **lower** | present | a good helmet | the chance of a serious head injury |  |  |  | greatly *property* | vn put\_direction-9.4 «NP V NP»: agent=Agent chance=Theme |
| 2 | **fall off** | present | you | a bike or scooter |  |  |  |  | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute |
| 3 | **chance** |  | a serious head injury |  |  |  |  |  | nom chance «state intransitive»: of=agent |

<!-- .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:272-bikes-scooters-and-car-parks.lesson:18`.

**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): R7-rel-agree ×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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