---
title: Why must the area round a wrecking ball be cleared of people? — Swings and pendulums · tree and pragmatics
description: Why must the area round a wrecking ball be cleared of people? Test 8 · ★★ of lesson 10 «Swings and pendulums» 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 right.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/physics/10-swings-and-pendulums/t8/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/questions/physics/) / [Swings and pendulums](https://md.mova.elamur.ai/free/en/corpora/questions/physics/10-swings-and-pendulums/) / t8

# Test 8 · ★★ · Swings and pendulums

<!-- .ven lang=en -->
Why must the area round a wrecking ball be cleared of people?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** clear · **To what, where:** area

<!-- .vabout -->
This is test 8 · ★★ of lesson 10 «Swings and pendulums» 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/10-swings-and-pendulums/#t8).

## The question {#question}

```conllu
# sent_id = question:physics:10-swings-and-pendulums:t8:1
# text = Why must the area round a wrecking ball be cleared of people?
1	Why	why	ADV	WRB	PronType=Int	10	advmod	_	_
2	must	must	AUX	MD	VerbForm=Fin	10	aux	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	area	area	NOUN	NN	Number=Sing	10	nsubj:pass	_	_
5	round	round	ADP	IN	_	8	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	wrecking	wrecking	NOUN	NN	Number=Sing	8	compound	_	_
8	ball	ball	NOUN	NN	Number=Sing	4	nmod	_	_
9	be	be	AUX	VB	VerbForm=Inf	10	aux:pass	_	_
10	cleared	clear	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	people	people	NOUN	NNS	Number=Plur	10	obl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	10	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **clear** | must · passive |  | the area round a wrecking ball |  |  |  | of people | vn clear-10.3-1 «NP V NP PP.source»: subject=Theme of people=Source |

<!-- .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 -->
The ball can swing back towards the crane

```conllu
# sent_id = question:physics:10-swings-and-pendulums:t8:o1:1
# text = The ball can swing back towards the crane
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	ball	ball	NOUN	NN	Number=Sing	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	swing	swing	VERB	VB	VerbForm=Inf	0	root	_	_
5	back	back	ADV	RB	_	4	advmod	_	_
6	towards	towards	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	crane	crane	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **swing back** | can | the ball |  |  | the crane |  |  | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme towards crane=Trajectory |

### Option 2 {#o2}

<!-- .ven lang=en -->
The ball might float away

```conllu
# sent_id = question:physics:10-swings-and-pendulums:t8:o2:1
# text = The ball might float away
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	ball	ball	NOUN	NN	Number=Sing	4	nsubj	_	_
3	might	might	AUX	MD	VerbForm=Fin	4	aux	_	_
4	float	float	VERB	VB	VerbForm=Inf	0	root	_	_
5	away	away	ADV	RB	_	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float away** | might | the ball |  |  |  |  | away *property* | vn run-51.3.2-2 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
The noise is far too loud for people's ears to bear

```conllu
# sent_id = question:physics:10-swings-and-pendulums:t8:o3:1
# text = The noise is far too loud for people's ears to bear
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	noise	noise	NOUN	NN	Number=Sing	6	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	far	far	ADV	RB	Degree=Pos	6	advmod	_	_
5	too	too	ADV	RB	_	6	advmod	_	_
6	loud	loud	ADJ	JJ	Degree=Pos	0	root	_	_
7	for	for	ADP	IN	_	10	case	_	_
8	people	people	NOUN	NNS	Number=Plur	10	nmod:poss	_	SpaceAfter=No
9	's	's	PART	POS	_	8	case	_	_
10	ears	ear	NOUN	NNS	Number=Plur	6	obl	_	_
11	to	to	PART	TO	_	12	mark	_	_
12	bear	bear	VERB	VB	VerbForm=Inf	6	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the noise |  |  |  |  | for people's ears; far, loud *property* | tree rules |
| 2 | **bear** | to-infinitive | the noise *not said here* |  |  |  |  |  | vn admire-31.2 «NP V that S»: agent=Experiencer |

### Option 4 {#o4}

<!-- .ven lang=en -->
The building pulls the ball in

```conllu
# sent_id = question:physics:10-swings-and-pendulums:t8:o4:1
# text = The building pulls the ball in
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	building	building	NOUN	NN	Number=Sing	3	nsubj	_	_
3	pulls	pull	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	ball	ball	NOUN	NN	Number=Sing	3	obj	_	_
6	in	in	ADP	IN	_	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull** | present | the building | the ball |  |  |  |  | vn push-12-1 «NP V NP»: agent=Agent ball=Theme |

<!-- div src -->

**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.

<!-- /div -->

<!-- pn -->
- ← previous: [Swings and pendulums, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/physics/10-swings-and-pendulums/t7/)
- next →: [Swings and pendulums, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/physics/10-swings-and-pendulums/t9/)
- ↑ back to [Swings and pendulums](https://md.mova.elamur.ai/free/en/corpora/questions/physics/10-swings-and-pendulums/)