---
title: Why is a playground with rubber matting safer than one with concrete? — Climbing trees and playgrounds · tree and pragmatics
description: Why is a playground with rubber matting safer than one with concrete? Test 9 of lesson 4 «Climbing trees and playgrounds» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 9 · Climbing trees and playgrounds

<!-- .ven lang=en -->
Why is a playground with rubber matting safer than one with concrete?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** playground · **What happens:** mat · **To what, where:** one

<!-- .vabout -->
This is test 9 of lesson 4 «Climbing trees and playgrounds» of the everyday 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/everyday/4-climbing/#t9).

## The question {#question}

```conllu
# sent_id = question:everyday:4-climbing:t9:1
# text = Why is a playground with rubber matting safer than one with concrete?
1	Why	why	ADV	WRB	PronType=Int	7	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	playground	playground	NOUN	NN	Number=Sing	7	nsubj	_	_
5	with	with	ADP	IN	_	6	case	_	_
6	rubber	rubber	NOUN	NN	Number=Sing	4	nmod	_	_
7	matting	mat	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
8	safer	safe	ADJ	JJR	Degree=Cmp	10	advmod	_	_
9	than	than	ADP	IN	_	8	fixed	_	_
10	one	one	NUM	CD	NumForm=Word|NumType=Card	7	obj	_	_
11	with	with	ADP	IN	_	12	case	_	_
12	concrete	concrete	NOUN	NN	Number=Sing	7	obl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mat** | present · progressive | a playground with rubber | one |  |  |  | with concrete | tree rules |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
A fall onto rubber is softer

```conllu
# sent_id = question:everyday:4-climbing:t9:o1:1
# text = A fall onto rubber is softer
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	fall	fall	NOUN	NN	Number=Sing	6	nsubj	_	_
3	onto	onto	ADP	IN	_	4	case	_	_
4	rubber	rubber	NOUN	NN	Number=Sing	2	nmod	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
6	softer	soft	ADJ	JJR	Degree=Cmp	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | a fall onto rubber |  |  |  |  | soft *property* | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Concrete is too cold to play on

```conllu
# sent_id = question:everyday:4-climbing:t9:o2:1
# text = Concrete is too cold to play on
1	Concrete	concrete	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	too	too	ADV	RB	_	4	advmod	_	_
4	cold	cold	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	play	play	VERB	VB	VerbForm=Inf	4	advcl	_	_
7	on	on	ADP	IN	_	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Concrete |  |  |  |  | cold *property* | tree rules |
| 2 | **play on** | to-infinitive | Concrete *not said here* |  |  |  |  |  | vn performance-26.7-1 «NP V»: agent=Agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
Rubber stops children from climbing high

```conllu
# sent_id = question:everyday:4-climbing:t9:o3:1
# text = Rubber stops children from climbing high
1	Rubber	rubber	NOUN	NN	Number=Sing	2	nsubj	_	_
2	stops	stop	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	children	child	NOUN	NNS	Number=Plur	2	obj	_	_
4	from	from	SCONJ	IN	_	5	mark	_	_
5	climbing	climb	VERB	VBG	Tense=Pres|VerbForm=Part	2	advcl	_	_
6	high	high	ADJ	JJ	Degree=Pos	5	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | present | Rubber | children |  |  |  |  | vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality child=Eventuality |
| 2 | **climb** | gerund | Rubber *not said here* |  |  |  |  | high *property* | vn run-51.3.2 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
Rubber makes the frames lower

```conllu
# sent_id = question:everyday:4-climbing:t9:o4:1
# text = Rubber makes the frames lower
1	Rubber	rubber	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	frames	frame	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	lower	lower	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Rubber |  |  |  |  |  | tree rules |
| 2 | **lower** | present | the frames |  |  |  |  |  | vn caused\_calibratable\_cos-45.6.2-1 «NP V ADV-Middle»: agent=Patient |

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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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- ← previous: [Climbing trees and playgrounds, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/4-climbing/t8/)
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