---
title: «why do scientists test mars rovers in the atacama» Which is the bes… — Deserts · tree and pragmatics
description: «why do scientists test mars rovers in the atacama» Which is the best answer? Test 7 of lesson 18 «Deserts» of the geography course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 7 · Deserts

<!-- .ven lang=en -->
«why do scientists test mars rovers in the atacama» Which is the best answer?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** scientists · **What happens:** test, be · **To what, where:** mars rovers, atacama, best answer · **Speech:** someone speaks here

<!-- .vabout -->
This is test 7 of lesson 18 «Deserts» of the geography 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/geography/18-deserts/#t7).

## The question {#question}

```conllu
# sent_id = question:geography:18-deserts:t7:1
# text = «why do scientists test mars rovers in the atacama» Which is the best answer?
1	«	«	PUNCT	``	_	5	punct	_	SpaceAfter=No
2	why	why	ADV	WRB	PronType=Int	5	advmod	_	_
3	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	scientists	scientist	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	test	test	VERB	VB	VerbForm=Inf	16	csubj	_	_
6	mars	mars	ADJ	JJ	Degree=Pos	7	amod	_	_
7	rovers	rover	NOUN	NNS	Number=Plur	5	obj	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	atacama	atacama	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
11	»	»	PUNCT	''	_	5	punct	_	_
12	Which	which	PRON	WDT	PronType=Rel	16	nsubj	_	_
13	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
15	best	good	ADJ	JJS	Degree=Sup	16	amod	_	_
16	answer	answer	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
17	?	?	PUNCT	.	_	16	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **test** *in a quote* | present · do-support | scientists | mars rovers |  | the atacama |  |  | vn assessment-34.1 «NP V NP»: agent=Agent rover=Theme |
| 2 | **be** *speech: assert* | present |  | the best answer |  |  |  |  | tree rules |

<!-- .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 has red sand that fell down from Mars a long time ago

```conllu
# sent_id = question:geography:18-deserts:t7:o1:1
# text = It has red sand that fell down from Mars a long time ago
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	red	red	ADJ	JJ	Degree=Pos	4	amod	_	_
4	sand	sand	NOUN	NN	Number=Sing	2	obj	_	_
5	that	that	PRON	WDT	PronType=Rel	6	nsubj	_	_
6	fell	fall	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	acl:relcl	_	_
7	down	down	ADV	RB	_	6	advmod	_	_
8	from	from	ADP	IN	_	9	case	_	_
9	Mars	Mars	PROPN	NNP	Number=Sing	6	obl	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	long	long	ADJ	JJ	Degree=Pos	12	amod	_	_
12	time	time	NOUN	NN	Number=Sing	6	obl:unmarked	_	_
13	ago	ago	ADV	RB	_	6	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | It | red sand |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent sand=Patient |
| 2 | **fall down** | past | red sand |  |  | Mars | time | ago, down *property* | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme from mars=Initial\_Location |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Its soil is so dry and lifeless that it is a lot like Mars

```conllu
# sent_id = question:geography:18-deserts:t7:o2:1
# text = Its soil is so dry and lifeless that it is a lot like Mars
1	Its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	soil	soil	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	so	so	ADV	RB	_	5	advmod	_	_
5	dry	dry	ADJ	JJ	Degree=Pos	0	root	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	lifeless	lifeless	ADJ	JJ	Degree=Pos	5	conj	_	_
8	that	that	SCONJ	IN	_	12	mark	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	lot	lot	NOUN	NN	Number=Sing	5	advcl	_	_
13	like	like	ADP	IN	_	14	case	_	_
14	Mars	Mars	PROPN	NNP	Number=Sing	12	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Its soil |  |  |  |  | dry *property* | tree rules |
| 2 | **be** |  | Its soil *not said here* |  |  |  |  |  | tree rules |
| 3 | **is a** | present | soil | a lot |  |  |  | like Mars | tree rules |
| 4 | **soil** |  | Its *= it* |  |  |  |  |  | nom soil «state transitive»: poss=agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is the hottest place on Earth, just as hot as Mars is

```conllu
# sent_id = question:geography:18-deserts:t7:o3:1
# text = It is the hottest place on Earth, just as hot as Mars is
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	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	hottest	hot	ADJ	JJS	Degree=Sup	5	amod	_	_
5	place	place	NOUN	NN	Number=Sing	0	root	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	Earth	Earth	PROPN	NNP	Number=Sing	5	nmod	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	just	just	ADV	RB	_	11	advmod	_	_
10	as	as	ADV	RB	_	11	advmod	_	_
11	hot	hot	ADJ	JJ	Degree=Pos	5	amod	_	_
12	as	as	ADP	IN	_	13	case	_	_
13	Mars	Mars	PROPN	NNP	Number=Sing	11	obl	_	_
14	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | the hottest place |  | Earth |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is the closest place to Mars

```conllu
# sent_id = question:geography:18-deserts:t7:o4:1
# text = It is the closest place to Mars
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	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	closest	close	ADJ	JJS	Degree=Sup	5	amod	_	_
5	place	place	NOUN	NN	Number=Sing	0	root	_	_
6	to	to	ADP	IN	_	7	case	_	_
7	Mars	Mars	PROPN	NNP	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | the closest place | Mars |  |  |  | tree rules |

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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.

<!-- /div -->

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