---
title: bro my bike fell over when i stopped at the lights. why — Riding a bike: why it stays up · tree and pragmatics
description: bro my bike fell over when i stopped at the lights. why Test 8 · ★★ of lesson 9 «Riding a bike: why it stays up» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 8 · ★★ · Riding a bike: why it stays up

<!-- .ven lang=en -->
bro my bike fell over when i stopped at the lights. why

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** bike, i · **What happens:** fall over, stop · **To what, where:** lights

<!-- .vabout -->
This is test 8 · ★★ of lesson 9 «Riding a bike: why it stays up» of the physics course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/9-riding-a-bike/#t8).

## The question {#question}

```conllu
# sent_id = question:physics:9-riding-a-bike:t8:1
# text = bro my bike fell over when i stopped at the lights. why
1	bro	bro	NOUN	NN	Number=Sing	4	vocative	_	_
2	my	my	PRON	PRP$	Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs	3	nmod:poss	_	_
3	bike	bike	NOUN	NN	Number=Sing	4	nsubj	_	_
4	fell	fall	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
5	over	over	ADV	RB	_	4	advmod	_	_
6	when	when	ADV	WRB	PronType=Int	8	advmod	_	_
7	i	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	8	nsubj	_	_
8	stopped	stop	VERB	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	4	advcl	_	_
9	at	at	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	lights	light	NOUN	NNS	Number=Plur	8	obl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	4	punct	_	_
13	why	why	ADV	WRB	PronType=Int	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fall over** | past | my bike |  |  |  |  | bro *vocative*; over *property* | vn occur-48.3 «NP V»: agent=Theme |
| 2 | **stop** | past | i |  |  | the lights |  |  | vn lodge-46 «NP V PP.location»: agent=Theme at light=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Bikes get heavier as soon as they stop moving

```conllu
# sent_id = question:physics:9-riding-a-bike:t8:o1:1
# text = Bikes get heavier as soon as they stop moving
1	Bikes	bike	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	get	get	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	heavier	heavy	ADJ	JJR	Degree=Cmp	2	xcomp	_	_
4	as	as	ADV	RB	_	5	advmod	_	_
5	soon	soon	ADV	RB	Degree=Pos	2	advmod	_	_
6	as	as	SCONJ	IN	_	8	mark	_	_
7	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	8	nsubj	_	_
8	stop	stop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
9	moving	move	VERB	VBG	VerbForm=Ger	8	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present | Bikes |  |  |  |  | heavy, soon *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |
| 2 | **stop** | present | Bikes *= bike* |  |  |  |  |  | vn stop-55.4-1-1 «NP V S\_ING»: agent=Affector clause=Eventuality |
| 3 | **move** | gerund | Bikes *= bike* *not said here* |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Your tyres lost all of their air at once when you stopped

```conllu
# sent_id = question:physics:9-riding-a-bike:t8:o2:1
# text = Your tyres lost all of their air at once when you stopped
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	tyres	tyre	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	lost	lose	VERB	VBN	Tense=Past|VerbForm=Part	12	advcl	_	_
4	all	all	DET	DT	PronType=Tot	3	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	air	air	NOUN	NN	Number=Sing	4	nmod	_	_
8	at	at	ADP	IN	_	9	case	_	_
9	once	once	ADV	RB	NumForm=Word|NumType=Mult	4	nmod	_	_
10	when	when	ADV	WRB	PronType=Int	12	advmod	_	_
11	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	12	nsubj	_	_
12	stopped	stop	VERB	VBD	Mood=Ind|Number=Sing|Person=2|Tense=Past|VerbForm=Fin	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lose** | participle | Your tyres | all |  |  |  |  | vn succeed-74-3-1 «NP V NP»: agent=Agent all=Eventuality |
| 2 | **stop** | past | you |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

### Option 3 {#o3}

<!-- .ven lang=en -->
The traffic lights pulled it over with magnetism

```conllu
# sent_id = question:physics:9-riding-a-bike:t8:o3:1
# text = The traffic lights pulled it over with magnetism
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	traffic	traffic	NOUN	NN	Number=Sing	3	compound	_	_
3	lights	light	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	pulled	pull	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
5	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	obj	_	_
6	over	over	ADP	RP	_	4	compound:prt	_	_
7	with	with	ADP	IN	_	8	case	_	_
8	magnetism	magnetism	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull over** | past | the traffic lights | it |  |  |  | with magnetism | vn push-12-1 «NP V NP»: agent=Agent it=Theme |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
With no speed you cannot steer to balance

```conllu
# sent_id = question:physics:9-riding-a-bike:t8:o4:1
# text = With no speed you cannot steer to balance
1	With	with	ADP	IN	_	3	case	_	_
2	no	no	DET	DT	PronType=Neg	3	det	_	_
3	speed	speed	NOUN	NN	Number=Sing	7	obl	_	_
4	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	7	nsubj	_	_
5	can	can	AUX	MD	VerbForm=Fin	7	aux	_	SpaceAfter=No
6	not	not	PART	RB	Polarity=Neg	7	advmod	_	_
7	steer	steer	VERB	VB	VerbForm=Inf	0	root	_	_
8	to	to	PART	TO	_	9	mark	_	_
9	balance	balance	VERB	VB	VerbForm=Inf	7	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **steer** | can | you |  |  |  |  | with no speed | tree rules |
| 2 | **balance** | to-infinitive | you *not said here* |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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