---
title: Big wheels roll over bumps easily, and thin, smooth tyres rub the ro… — Riding a bike: why it stays up · tree and pragmatics
description: Big wheels roll over bumps easily, and thin, smooth tyres rub the road less. Who acts: Big wheels, thin smooth tyres. A sentence of the lesson «Riding a bike: why it stays up» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Riding a bike: why it stays up, sentence 13

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Big wheels roll over bumps easily, and thin, smooth tyres rub the road less.

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**Who acts:** Big wheels, thin smooth tyres · **What happens:** roll, rub · **To what, where:** bumps, road

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This is a sentence of the lesson «Riding a bike: why it stays up» of the physics 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 (Big wheels, thin smooth tyres), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:009-riding-a-bike.lesson:13
# text = Big wheels roll over bumps easily, and thin, smooth tyres rub the road less.
# source = school lesson (ours)
# course = physics
# lesson = 009-riding-a-bike.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): R5-strong ×1
1	Big	big	ADJ	JJ	Degree=Pos	2	amod	_	_
2	wheels	wheel	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	roll	roll	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	over	over	ADP	IN	_	5	case	_	_
5	bumps	bump	NOUN	NNS	Number=Plur	3	obl	_	_
6	easily	easily	ADV	RB	_	3	advmod	_	_
7	,	,	PUNCT	,	_	13	punct	_	_
8	and	and	CCONJ	CC	_	13	cc	_	_
9	thin	thin	ADJ	JJ	Degree=Pos	12	amod	_	_
10	,	,	PUNCT	,	_	9	punct	_	_
11	smooth	smooth	ADJ	JJ	Degree=Pos	12	amod	_	_
12	tyres	tyre	NOUN	NNS	Number=Plur	13	nsubj	_	_
13	rub	rub	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	road	road	NOUN	NN	Number=Sing	13	obj	_	Agree=R5-strong|Haiku=16:obj
16	less	less	ADV	RBR	Degree=Cmp	13	advmod	_	_
17	.	.	PUNCT	.	_	3	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 | **roll** | present | Big wheels |  |  | bumps |  | easily *property* | vn run-51.3.2-2 «NP V PP.location»: agent=Theme over bump=Trajectory |
| 2 | **rub** | present | thin smooth tyres | the road |  |  |  | less *property* | vn spray-9.7-1 «NP V NP.theme»: agent=Agent road=Theme |

<!-- .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:physics:009-riding-a-bike.lesson:13`.

**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): R5-strong ×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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