---
title: A chain wheel bearing 40 teeth drives a rear cog bearing 20 teeth. D… — Olympiad: machines at home and in the… · tree and pragmatics
description: A chain wheel bearing 40 teeth drives a rear cog bearing 20 teeth. Determine the number of revolutions of the rear wheel corresponding to 3 revolutions of the pedals. Exam question 1 of lesson 42 «Olympiad: machines at home and in the factory ★★★» of the technology course of Mova's primary school, w
---

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# Exam question 1 · Olympiad: machines at home and in the factory ★★★

<!-- .ven lang=en -->
A chain wheel bearing 40 teeth drives a rear cog bearing 20 teeth. Determine the number of revolutions of the rear wheel corresponding to 3 revolutions of the pedals.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** chain wheel, rear cog, you, rear wheel, pedals · **What happens:** bear, drive, determine, correspond, revolt · **To what, where:** 40 teeth, rear cog, 20 teeth, number

<!-- .vabout -->
This is exam question 1 of lesson 42 «Olympiad: machines at home and in the factory ★★★» of the technology course of Mova's primary school, asked in stiff, formal language. 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/technology/42-olympiad-machines-at-home-and-in-the-factory/#e1).

## The question {#question}

<!-- .note -->
*Sentence 1:* A chain wheel bearing 40 teeth drives a rear cog bearing 20 teeth.

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:1
# text = A chain wheel bearing 40 teeth drives a rear cog bearing 20 teeth.
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	chain	chain	NOUN	NN	Number=Sing	3	compound	_	_
3	wheel	wheel	NOUN	NN	Number=Sing	7	nsubj	_	_
4	bearing	bear	VERB	VBG	VerbForm=Ger	3	acl	_	_
5	40	40	NUM	CD	NumForm=Digit|NumType=Card	6	nummod	_	_
6	teeth	tooth	NOUN	NNS	Number=Plur	4	obj	_	_
7	drives	drive	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
9	rear	rear	ADJ	JJ	Degree=Pos	10	amod	_	_
10	cog	cog	NOUN	NN	Number=Sing	7	obj	_	_
11	bearing	bear	VERB	VBG	VerbForm=Ger	10	acl	_	_
12	20	20	NUM	CD	NumForm=Digit|NumType=Card	13	nummod	_	_
13	teeth	tooth	NOUN	NNS	Number=Plur	11	obj	_	SpaceAfter=No
14	.	.	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bear** | gerund | a chain wheel *not said here* | 40 teeth |  |  |  |  | vn birth-28.2-1-1 «NP V NP»: agent=Agent tooth=Patient |
| 2 | **drive** | present | a chain wheel | a rear cog |  |  |  |  | vn nonvehicle-51.4.2-1 «NP V PP»: agent=Theme cog=Trajectory |
| 3 | **bear** | gerund | a rear cog *not said here* | 20 teeth |  |  |  |  | vn birth-28.2-1-1 «NP V NP»: agent=Agent tooth=Patient |

<!-- .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.

<!-- .note -->
*Sentence 2:* Determine the number of revolutions of the rear wheel corresponding to 3 revolutions of the pedals.

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:2
# text = Determine the number of revolutions of the rear wheel corresponding to 3 revolutions of the pedals.
1	Determine	determine	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	number	number	NOUN	NN	Number=Sing	1	obj	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	revolutions	revolution	NOUN	NNS	Number=Plur	3	nmod	_	_
6	of	of	ADP	IN	_	9	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
8	rear	rear	ADJ	JJ	Degree=Pos	9	amod	_	_
9	wheel	wheel	NOUN	NN	Number=Sing	5	nmod	_	_
10	corresponding	correspond	VERB	VBG	VerbForm=Ger	9	acl	_	_
11	to	to	ADP	IN	_	13	case	_	_
12	3	3	NUM	CD	NumForm=Digit|NumType=Card	13	nummod	_	_
13	revolutions	revolution	NOUN	NNS	Number=Plur	10	obl	_	_
14	of	of	ADP	IN	_	16	case	_	_
15	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
16	pedals	pedal	NOUN	NNS	Number=Plur	13	nmod	_	SpaceAfter=No
17	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **determine** | imperative | you *not said here* | the number of revolutions of the rear wheel |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent number=Topic |
| 2 | **correspond** | gerund | the rear wheel *not said here* |  |  |  |  | to 3 revolutions of the pedals | vn correspond-36.1 «NP V»: agent=Agent |
| 3 | **revolt** |  | the rear wheel |  |  |  |  |  | nom revolution «event intransitive»: of=agent |
| 4 | **revolt** |  | the pedals |  |  |  |  |  | nom revolution «event intransitive»: of=agent |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Six

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:o1:1
# text = Six
1	Six	six	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
Sixty

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:o2:1
# text = Sixty
1	Sixty	sixty	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Three

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:o3:1
# text = Three
1	Three	three	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
Two

```conllu
# sent_id = question:technology:42-olympiad-machines-at-home-and-in-the-factory:e1:o4:1
# text = Two
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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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- ↑ back to [Olympiad: machines at home and in the factory ★★★](https://md.mova.elamur.ai/free/en/corpora/questions/technology/42-olympiad-machines-at-home-and-in-the-factory/)

