---
title: At night a bike needs a white light at the front, a red light at the… — Bikes, scooters and car parks · tree and pragmatics
description: At night a bike needs a white light at the front, a red light at the back and reflectors, so drivers can see it. Who acts: bike, drivers. 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 of every clau
---

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# Bikes, scooters and car parks, sentence 7

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At night a bike needs a white light at the front, a red light at the back and reflectors, so drivers can see it.

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**Who acts:** bike, drivers · **What happens:** need, see · **To what, where:** white light, front, 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 (bike, drivers), 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:7
# text = At night a bike needs a white light at the front, a red light at the back and reflectors, so drivers can see it.
# 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): no change
1	At	at	ADP	IN	_	2	case	_	_
2	night	night	NOUN	NN	Number=Sing	5	obl	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	bike	bike	NOUN	NN	Number=Sing	5	nsubj	_	_
5	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	white	white	ADJ	JJ	Degree=Pos	8	amod	_	_
8	light	light	NOUN	NN	Number=Sing	5	obj	_	_
9	at	at	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	front	front	NOUN	NN	Number=Sing	8	nmod	_	_
12	,	,	PUNCT	,	_	15	punct	_	_
13	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
14	red	red	ADJ	JJ	Degree=Pos	15	amod	_	_
15	light	light	NOUN	NN	Number=Sing	8	conj	_	_
16	at	at	ADP	IN	_	18	case	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	back	back	NOUN	NN	Number=Sing	15	nmod	_	_
19	and	and	CCONJ	CC	_	20	cc	_	_
20	reflectors	reflector	NOUN	NNS	Number=Plur	18	conj	_	_
21	,	,	PUNCT	,	_	25	punct	_	_
22	so	so	SCONJ	IN	_	25	mark	_	_
23	drivers	driver	NOUN	NNS	Number=Plur	25	nsubj	_	_
24	can	can	AUX	MD	VerbForm=Fin	25	aux	_	_
25	see	see	VERB	VB	VerbForm=Inf	5	conj	_	_
26	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	25	obj	_	_
27	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

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- 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 | **need** | present | a bike | a white light and a red light at the back and reflectors |  | the front | night |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot light=Theme |
| 2 | **see** | can | drivers | bike |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer it=Stimulus |

<!-- .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:7`.

**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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- ← previous: [Bikes, scooters and car parks, 6](https://md.mova.elamur.ai/free/en/corpora/school/everyday/272-bikes-scooters-and-car-parks/6/)
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