---
title: What would happen if a big jet went along the runway at only 50 km/h? — Why planes fly · tree and pragmatics
description: What would happen if a big jet went along the runway at only 50 km/h? Test 5 · ★ of lesson 22 «Why planes fly» of the technology 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 · ★ · Why planes fly

<!-- .ven lang=en -->
What would happen if a big jet went along the runway at only 50 km/h?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 3 · wrong ✗ · **Who acts:** big jet · **What happens:** happen, go · **To what, where:** 50 km/h

<!-- .vabout -->
This is test 5 · ★ of lesson 22 «Why planes fly» of the technology 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/technology/22-why-planes-fly/#t5).

## The question {#question}

```conllu
# sent_id = question:technology:22-why-planes-fly:t5:1
# text = What would happen if a big jet went along the runway at only 50 km/h?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
4	if	if	SCONJ	IN	_	8	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	big	big	ADJ	JJ	Degree=Pos	7	amod	_	_
7	jet	jet	NOUN	NN	Number=Sing	8	nsubj	_	_
8	went	go	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	3	advcl	_	_
9	along	along	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	runway	runway	NOUN	NN	Number=Sing	8	obl	_	_
12	at	at	ADP	IN	_	15	case	_	_
13	only	only	ADV	RB	_	14	advmod	_	_
14	50	50	NUM	CD	NumForm=Digit|NumType=Card	15	nummod	_	_
15	km/h	km/h	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
16	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | would |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **go** *a condition, not said to happen* | past | a big jet |  |  | 50 km/h |  | along the runway | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme along runway=Initial\_Location |

<!-- .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 {#o1}

<!-- .ven lang=en -->
It would fly, but only very low

```conllu
# sent_id = question:technology:22-why-planes-fly:t5:o1:1
# text = It would fly, but only very low
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	fly	fly	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	8	punct	_	_
5	but	but	CCONJ	CC	_	8	cc	_	_
6	only	only	ADV	RB	_	8	advmod	_	_
7	very	very	ADV	RB	_	8	advmod	_	_
8	low	low	ADJ	JJ	Degree=Pos	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fly** | would | It |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
It would lift off slowly and gently, like a big kite in the wind

<!-- fold The tree, 14 words -->
```conllu
# sent_id = question:technology:22-why-planes-fly:t5:o2:1
# text = It would lift off slowly and gently, like a big kite in the wind
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	lift	lift	VERB	VB	VerbForm=Inf	0	root	_	_
4	off	off	ADP	RP	_	3	compound:prt	_	_
5	slowly	slowly	ADV	RB	_	3	advmod	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	gently	gently	ADV	RB	_	5	conj	_	SpaceAfter=No
8	,	,	PUNCT	,	_	12	punct	_	_
9	like	like	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	big	big	ADJ	JJ	Degree=Pos	12	amod	_	_
12	kite	kite	NOUN	NN	Number=Sing	3	parataxis	_	_
13	in	in	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	wind	wind	NOUN	NN	Number=Sing	12	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lift off** | would | It |  |  |  |  | slowly *property* | vn put\_direction-9.4 «NP V NP»: agent=Agent |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
It would not get enough lift and would stay on the ground

```conllu
# sent_id = question:technology:22-why-planes-fly:t5:o3:1
# text = It would not get enough lift and would stay on the ground
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	get	get	VERB	VB	VerbForm=Inf	0	root	_	_
5	enough	enough	ADJ	JJ	Degree=Pos	6	amod	_	_
6	lift	lift	NOUN	NN	Number=Sing	4	obj	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	would	would	AUX	MD	VerbForm=Fin	9	aux	_	_
9	stay	stay	VERB	VB	VerbForm=Inf	4	conj	_	_
10	on	on	ADP	IN	_	12	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	ground	ground	NOUN	NN	Number=Sing	9	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **get** | would | It | enough lift |  |  |  |  | vn comprehend-87.2-1 «NP V NP»: agent=Experiencer lift=Stimulus |
| 2 | **stay** | would |  |  |  | the ground |  |  | vn exist-47.1 «NP V PP.location»: agent=Theme on ground=Location |

### Option 4 {#o4}

<!-- .ven lang=en -->
It would bounce up and down

```conllu
# sent_id = question:technology:22-why-planes-fly:t5:o4:1
# text = It would bounce up and down
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	bounce	bounce	VERB	VB	VerbForm=Inf	0	root	_	_
4	up	up	ADV	RB	_	3	advmod	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	down	down	ADV	RB	_	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bounce** | would | It |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |

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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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