---
title: why don't people at the bottom of the world fall off — Gravity · tree and pragmatics
description: why don't people at the bottom of the world fall off Test 10 · ★ of lesson 6 «Gravity» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/world/6-gravity/t10/)

<!-- 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/) / [World](https://md.mova.elamur.ai/free/en/corpora/questions/world/) / [Gravity](https://md.mova.elamur.ai/free/en/corpora/questions/world/6-gravity/) / t10

# Test 10 · ★ · Gravity

<!-- .ven lang=en -->
why don't people at the bottom of the world fall off

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** people · **What happens:** not fall off

<!-- .vabout -->
This is test 10 · ★ of lesson 6 «Gravity» of the world 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/world/6-gravity/#t10).

## The question {#question}

```conllu
# sent_id = question:world:6-gravity:t10:1
# text = why don't people at the bottom of the world fall off
1	why	why	ADV	WRB	PronType=Int	11	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux	_	SpaceAfter=No
3	n't	not	PART	RB	Polarity=Neg	11	advmod	_	_
4	people	people	NOUN	NNS	Number=Plur	11	nsubj	_	_
5	at	at	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	bottom	bottom	NOUN	NN	Number=Sing	4	nmod	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	world	world	NOUN	NN	Number=Sing	7	nmod	_	_
11	fall	fall	VERB	VB	VerbForm=Inf	0	root	_	_
12	off	off	ADP	RP	_	11	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **fall off** | present · do-support | people at the bottom of the world |  |  |  |  |  | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute |

<!-- .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 -->
They really are upside down and need belts to hold them on

```conllu
# sent_id = question:world:6-gravity:t10:o1:1
# text = They really are upside down and need belts to hold them on
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
2	really	really	ADV	RB	_	4	advmod	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	upside	upside	NOUN	NN	Number=Sing	1	nmod	_	_
5	down	down	ADV	RB	_	7	advmod	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
8	belts	belt	NOUN	NNS	Number=Plur	7	obj	_	_
9	to	to	PART	TO	_	10	mark	_	_
10	hold	hold	VERB	VB	VerbForm=Inf	7	xcomp	_	_
11	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	10	obj	_	_
12	on	on	ADP	RP	_	10	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present |  | upside |  |  |  |  | tree rules |
| 2 | **need** | present | They | belts |  |  |  | down *property* | tree rules |
| 3 | **hold on** *not said to happen* | to-infinitive | belts *not said here* | belts *= belt* |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent they=Theme |

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

<!-- .ven lang=en -->
Gravity pulls everyone towards the Earth's centre

```conllu
# sent_id = question:world:6-gravity:t10:o2:1
# text = Gravity pulls everyone towards the Earth's centre
1	Gravity	gravity	NOUN	NN	Number=Sing	2	nsubj	_	_
2	pulls	pull	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	everyone	everyone	PRON	NN	Number=Sing|PronType=Tot	2	obj	_	_
4	towards	towards	ADP	IN	_	8	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	Earth	Earth	PROPN	NNP	Number=Sing	8	nmod:poss	_	SpaceAfter=No
7	's	's	PART	POS	_	6	case	_	_
8	centre	centre	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull** | present | Gravity | everyone |  | the Earth's centre |  |  | vn carry-11.4 «NP V NP PP.destination»: agent=Agent everyone=Theme towards centre=Destination |

### Option 3 {#o3}

<!-- .ven lang=en -->
The air pushes them against the ground

```conllu
# sent_id = question:world:6-gravity:t10:o3:1
# text = The air pushes them against the ground
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	air	air	NOUN	NN	Number=Sing	3	nsubj	_	_
3	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	3	obj	_	_
5	against	against	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	ground	ground	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **push** | present | the air | them *= they* |  | the ground |  |  | vn funnel-9.3-1-1 «NP V NP PP.trajectory»: agent=Agent they=Theme against ground=Trajectory |

### Option 4 {#o4}

<!-- .ven lang=en -->
They hold on because the ground is sticky

```conllu
# sent_id = question:world:6-gravity:t10:o4:1
# text = They hold on because the ground is sticky
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	hold	hold	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	on	on	ADP	RP	_	2	compound:prt	_	_
4	because	because	SCONJ	IN	_	8	mark	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	ground	ground	NOUN	NN	Number=Sing	8	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
8	sticky	sticky	ADJ	JJ	Degree=Pos	2	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold on** | present | They |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **is** | present | the ground |  |  |  |  | sticky *property* | tree rules |

<!-- 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: [Gravity, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/world/6-gravity/t9/)
- next →: [Gravity, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/world/6-gravity/t11/)
- ↑ back to [Gravity](https://md.mova.elamur.ai/free/en/corpora/questions/world/6-gravity/)