---
title: A bike helmet that cracks in a crash did its job: it broke so your h… — Nosebleeds and bumps on the head · tree and pragmatics
description: A bike helmet that cracks in a crash did its job: it broke so your head didn't. Who acts: bike helmet, helmet. A sentence of the lesson «Nosebleeds and bumps on the head» of the medicine course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Nosebleeds and bumps on the head, sentence 4

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A bike helmet that cracks in a crash did its job: it broke so your head didn't.

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**Who acts:** bike helmet, helmet · **What happens:** crack, do, break, job · **To what, where:** crash, job

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This is a sentence of the lesson «Nosebleeds and bumps on the head» 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 (bike helmet, helmet), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:005-nosebleeds-and-bumps-on-the-head.lesson:4
# text = A bike helmet that cracks in a crash did its job: it broke so your head didn't.
# source = school lesson (ours)
# course = medicine
# lesson = 005-nosebleeds-and-bumps-on-the-head.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	bike	bike	NOUN	NN	Number=Sing	3	compound	_	_
3	helmet	helmet	NOUN	NN	Number=Sing	9	nsubj	_	_
4	that	that	PRON	WDT	PronType=Rel	5	nsubj	_	_
5	cracks	crack	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	_
6	in	in	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	crash	crash	NOUN	NN	Number=Sing	5	obl	_	_
9	did	do	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
10	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	job	job	NOUN	NN	Number=Sing	9	obj	_	_
12	:	:	PUNCT	:	_	14	punct	_	_
13	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	14	nsubj	_	_
14	broke	break	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	parataxis	_	Agree=R7-rel-agree|Haiku=9:conj
15	so	so	ADV	RB	_	18	advmod	_	_
16	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	17	nmod:poss	_	_
17	head	head	NOUN	NN	Number=Sing	18	nsubj	_	_
18	did	do	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	14	advcl	_	_
19	n't	not	PART	RB	Polarity=Neg	18	advmod	_	_
20	.	.	PUNCT	.	_	9	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 | **crack** | present | a bike helmet |  |  | a crash |  |  | vn sound\_emission-43.2 «NP V PP.location»: agent=Theme in crash=Location |
| 2 | **do** | past | a bike helmet | helmet's job |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent job=Eventuality |
| 3 | **break** | past | helmet |  |  |  |  |  | vn hurt-40.8.3-1-1 «NP V»: agent=Patient |
| 4 | **job** |  | helmet |  |  |  |  |  | nom job «act intransitive»: poss=agent |

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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:medicine:005-nosebleeds-and-bumps-on-the-head.lesson:4`.

**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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