---
title: What would happen if a self-driving car's cameras and lidar were cov… — Self-driving cars and machines that ru… · tree and pragmatics
description: What would happen if a self-driving car's cameras and lidar were covered in thick mud? Test 6 · ★★ of lesson 40 «Self-driving cars and machines that run themselves» of the technology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's c
---

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# Test 6 · ★★ · Self-driving cars and machines that run themselves

<!-- .ven lang=en -->
What would happen if a self-driving car's cameras and lidar were covered in thick mud?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 4 · wrong ✗ · **What happens:** happen, drive, cover · **To what, where:** cameras

<!-- .vabout -->
This is test 6 · ★★ of lesson 40 «Self-driving cars and machines that run themselves» 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/40-self-driving-cars-and-machines-that-run-themselves/#t6).

## The question {#question}

```conllu
# sent_id = question:technology:40-self-driving-cars-and-machines-that-run-themselves:t6:1
# text = What would happen if a self-driving car's cameras and lidar were covered in thick mud?
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	_	15	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
6	self	self	NOUN	NN	Number=Sing	8	compound	_	SpaceAfter=No
7	-	-	PUNCT	HYPH	_	6	punct	_	SpaceAfter=No
8	driving	drive	VERB	VBG	VerbForm=Ger	9	amod	_	_
9	car	car	NOUN	NN	Number=Sing	11	nmod:poss	_	SpaceAfter=No
10	's	's	PART	POS	_	9	case	_	_
11	cameras	camera	NOUN	NNS	Number=Plur	15	nsubj:pass	_	_
12	and	and	CCONJ	CC	_	13	cc	_	_
13	lidar	lidar	NOUN	NN	Number=Sing	11	conj	_	_
14	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	15	aux:pass	_	_
15	covered	cover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
16	in	in	ADP	IN	_	18	case	_	_
17	thick	thick	ADJ	JJ	Degree=Pos	18	amod	_	_
18	mud	mud	NOUN	NN	Number=Sing	15	obl	_	SpaceAfter=No
19	?	?	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 | **drive** | gerund |  |  |  |  |  |  | vn nonvehicle-51.4.2-1 «NP.agent V»: agent=Agent |
| 3 | **cover** *a condition, not said to happen* | past · passive |  | a driving car's cameras and lidar |  |  |  | in thick mud | vn fill-9.8-1 «NP V NP PP.theme»: subject=Destination in mud=Theme |

<!-- .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 use its radio to see

```conllu
# sent_id = question:technology:40-self-driving-cars-and-machines-that-run-themselves:t6:o1:1
# text = It would use its radio to see
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	use	use	VERB	VB	VerbForm=Inf	0	root	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	radio	radio	NOUN	NN	Number=Sing	3	obj	_	_
6	to	to	PART	TO	_	7	mark	_	_
7	see	see	VERB	VB	VerbForm=Inf	3	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **use** | would | It | its radio |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent radio=Patient |
| 2 | **see** | to-infinitive |  |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 3 | **radio** |  | its *= it* |  |  |  |  |  | nom radio «communication transitive»: poss=agent |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
Nothing, it drives from memory

```conllu
# sent_id = question:technology:40-self-driving-cars-and-machines-that-run-themselves:t6:o2:1
# text = Nothing, it drives from memory
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	4	nsubj	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	drives	drive	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	from	from	ADP	IN	_	6	case	_	_
6	memory	memory	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drive** | present | Nothing |  |  | memory |  |  | vn nonvehicle-51.4.2-1 «NP V PP.location»: agent=Agent from memory=Trajectory |

### Option 3 {#o3}

<!-- .ven lang=en -->
It would drive better with less to look at

```conllu
# sent_id = question:technology:40-self-driving-cars-and-machines-that-run-themselves:t6:o3:1
# text = It would drive better with less to look at
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	drive	drive	VERB	VB	VerbForm=Inf	0	root	_	_
4	better	well	ADV	RBR	Degree=Cmp	3	advmod	_	_
5	with	with	ADP	IN	_	6	case	_	_
6	less	less	ADJ	JJR	Degree=Cmp	3	obl	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	look	look	VERB	VB	VerbForm=Inf	3	advcl	_	_
9	at	at	ADP	IN	_	8	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drive** | would | It |  |  |  |  | with less; well *property* | vn nonvehicle-51.4.2-1 «NP V PP»: agent=Theme |
| 2 | **look** | to-infinitive |  |  |  |  |  |  | vn stimulus\_subject-30.4 «NP V PP.attribute»: agent=Stimulus |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
It could not see the street properly, so it should stop safely

```conllu
# sent_id = question:technology:40-self-driving-cars-and-machines-that-run-themselves:t6:o4:1
# text = It could not see the street properly, so it should stop safely
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	could	could	AUX	MD	VerbForm=Fin	4	aux	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	see	see	VERB	VB	VerbForm=Inf	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	street	street	NOUN	NN	Number=Sing	4	obj	_	_
7	properly	properly	ADV	RB	_	4	advmod	_	SpaceAfter=No
8	,	,	PUNCT	,	_	12	punct	_	_
9	so	so	ADV	RB	_	12	advmod	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
11	should	should	AUX	MD	VerbForm=Fin	12	aux	_	_
12	stop	stop	VERB	VB	VerbForm=Inf	4	conj	_	_
13	safely	safely	ADV	RB	_	12	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **see** | could | It | the street |  |  |  | properly *property* | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer street=Stimulus |
| 2 | **stop** | should | street |  |  |  |  | safely *property* | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

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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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