---
title: Why do builders and firefighters on ladders also use three points of… — Climbing trees and playgrounds · tree and pragmatics
description: Why do builders and firefighters on ladders also use three points of contact? Test 5 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 wrong.
---

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# Test 5 · Climbing trees and playgrounds

<!-- .ven lang=en -->
Why do builders and firefighters on ladders also use three points of contact?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** builders · **What happens:** do, use, point · **To what, where:** three points, contact

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This is test 5 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/#t5).

## The question {#question}

```conllu
# sent_id = question:everyday:4-climbing:t5:1
# text = Why do builders and firefighters on ladders also use three points of contact?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	9	advcl	_	_
3	builders	builder	NOUN	NNS	Number=Plur	9	nsubj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	firefighters	firefighter	NOUN	NNS	Number=Plur	3	conj	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	ladders	ladder	NOUN	NNS	Number=Plur	3	nmod	_	_
8	also	also	ADV	RB	_	9	advmod	_	_
9	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	three	three	NUM	CD	NumForm=Word|NumType=Card	11	nummod	_	_
11	points	point	NOUN	NNS	Number=Plur	9	obj	_	_
12	of	of	ADP	IN	_	13	case	_	_
13	contact	contact	NOUN	NN	Number=Sing	11	nmod	_	SpaceAfter=No
14	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present | builders on ladders and firefighters *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **use** | present | builders on ladders and firefighters | three points of contact |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent point=Patient |
| 3 | **point** |  |  | contact |  |  |  |  | nom point «cognition transitive»: of=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
So they can carry two buckets

```conllu
# sent_id = question:everyday:4-climbing:t5:o1:1
# text = So they can carry two buckets
1	So	so	ADV	RB	_	4	advmod	_	_
2	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	carry	carry	VERB	VB	VerbForm=Inf	0	root	_	_
5	two	two	NUM	CD	NumForm=Word|NumType=Card	6	nummod	_	_
6	buckets	bucket	NOUN	NNS	Number=Plur	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **carry** | can | they | two buckets |  |  |  |  | vn carry-11.4 «NP V NP»: agent=Agent bucket=Theme |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
So they still hold on if one hand or foot slips

```conllu
# sent_id = question:everyday:4-climbing:t5:o2:1
# text = So they still hold on if one hand or foot slips
1	So	so	ADV	RB	_	4	advmod	_	_
2	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
3	still	still	ADV	RB	_	4	advmod	_	_
4	hold	hold	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	on	on	ADP	RP	_	4	compound:prt	_	_
6	if	if	SCONJ	IN	_	11	mark	_	_
7	one	one	NUM	CD	NumForm=Word|NumType=Card	8	nummod	_	_
8	hand	hand	NOUN	NN	Number=Sing	11	compound	_	_
9	or	or	CCONJ	CC	_	10	cc	_	_
10	foot	foot	NOUN	NN	Number=Sing	8	conj	_	_
11	slips	slip	NOUN	NNS	Number=Plur	4	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold on** | present | they |  |  |  | still |  | vn exist-47.1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is only a habit with no reason behind it at all

```conllu
# sent_id = question:everyday:4-climbing:t5:o3:1
# text = It is only a habit with no reason behind it at all
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	only	only	ADV	RB	_	5	advmod	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	habit	habit	NOUN	NN	Number=Sing	0	root	_	_
6	with	with	ADP	IN	_	8	case	_	_
7	no	no	DET	DT	PronType=Neg	8	det	_	_
8	reason	reason	NOUN	NN	Number=Sing	5	nmod	_	_
9	behind	behind	ADP	IN	_	10	case	_	_
10	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nmod	_	_
11	at	at	ADP	IN	_	12	case	_	_
12	all	all	DET	DT	PronType=Tot	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | a habit |  | all |  | with no reason behind reason | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Because ladders have three legs

```conllu
# sent_id = question:everyday:4-climbing:t5:o4:1
# text = Because ladders have three legs
1	Because	because	SCONJ	IN	_	3	mark	_	_
2	ladders	ladder	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	three	three	NUM	CD	NumForm=Word|NumType=Card	5	nummod	_	_
5	legs	leg	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | ladders | three legs |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent leg=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 4](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/4-climbing/t4/)
- next →: [Climbing trees and playgrounds, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/4-climbing/t6/)
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