---
title: Why is it hard to spot a tsunami from a ship in the deep ocean? — Tsunamis · tree and pragmatics
description: Why is it hard to spot a tsunami from a ship in the deep ocean? Test 10 · ★ of lesson 45 «Tsunamis» 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 wrong.
---

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# Test 10 · ★ · Tsunamis

<!-- .ven lang=en -->
Why is it hard to spot a tsunami from a ship in the deep ocean?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 3 · wrong ✗ · **What happens:** be, spot · **To what, where:** tsunami, ship

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This is test 10 · ★ of lesson 45 «Tsunamis» 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/45-tsunamis/#t10).

## The question {#question}

```conllu
# sent_id = question:geography:45-tsunamis:t10:1
# text = Why is it hard to spot a tsunami from a ship in the deep ocean?
1	Why	why	ADV	WRB	PronType=Int	4	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	expl	_	_
4	hard	hard	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	spot	spot	VERB	VB	VerbForm=Inf	4	ccomp	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	tsunami	tsunami	NOUN	NN	Number=Sing	6	obj	_	_
9	from	from	ADP	IN	_	11	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	ship	ship	NOUN	NN	Number=Sing	6	obl	_	_
12	in	in	ADP	IN	_	15	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	deep	deep	ADJ	JJ	Degree=Pos	15	amod	_	_
15	ocean	ocean	NOUN	NN	Number=Sing	11	nmod	_	SpaceAfter=No
16	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | hard *property* | tree rules |
| 2 | **spot** | to-infinitive |  | a tsunami |  | a ship in the deep ocean |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme tsunami=Destination |

<!-- .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 only comes out at night

```conllu
# sent_id = question:geography:45-tsunamis:t10:o1:1
# text = It only comes out at night
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	comes	come	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	out	out	ADP	RP	_	3	compound:prt	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	night	night	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **come out** | present | It |  |  |  | night |  | vn become-109.1 «NP V ADJ»: agent=Patient |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
It travels deep under the sea floor, out of sight

```conllu
# sent_id = question:geography:45-tsunamis:t10:o2:1
# text = It travels deep under the sea floor, out of sight
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	travels	travel	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	deep	deep	ADV	RB	_	2	advmod	_	_
4	under	under	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	sea	sea	NOUN	NN	Number=Sing	7	compound	_	_
7	floor	floor	NOUN	NN	Number=Sing	2	obl	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	out	out	ADP	IN	_	11	case	_	_
10	of	of	ADP	IN	_	11	case	_	_
11	sight	sight	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **travel** | present | It |  |  | the sea floor |  | out sight; deep *property* | vn run-51.3.2-1 «NP V PP.location»: agent=Theme under floor=Trajectory |

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

<!-- .ven lang=en -->
It is low and very long, so it looks like nothing much

```conllu
# sent_id = question:geography:45-tsunamis:t10:o3:1
# text = It is low and very long, so it looks like nothing much
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	low	low	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	6	cc	_	_
5	very	very	ADV	RB	_	6	advmod	_	_
6	long	long	ADJ	JJ	Degree=Pos	3	conj	_	SpaceAfter=No
7	,	,	PUNCT	,	_	10	punct	_	_
8	so	so	ADV	RB	_	10	advmod	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	10	nsubj	_	_
10	looks	look	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	like	like	ADP	IN	_	12	case	_	_
12	nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	10	obl	_	_
13	much	much	ADJ	JJ	Degree=Pos	10	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | low *property* | tree rules |
| 2 | **be** |  |  |  |  |  |  |  | tree rules |
| 3 | **look** | present | it |  |  |  |  | like nothing; much *property* | vn stimulus\_subject-30.4 «NP V ADJ»: agent=Stimulus |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is hidden by thick fog every time it crosses the ocean

```conllu
# sent_id = question:geography:45-tsunamis:t10:o4:1
# text = It is hidden by thick fog every time it crosses the ocean
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	hidden	hide	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	by	by	ADP	IN	_	6	case	_	_
5	thick	thick	ADJ	JJ	Degree=Pos	6	amod	_	_
6	fog	fog	NOUN	NN	Number=Sing	3	obl	_	_
7	every	every	DET	DT	PronType=Tot	8	det	_	_
8	time	time	NOUN	NN	Number=Sing	3	obl:unmarked	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	10	nsubj	_	_
10	crosses	cross	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	acl:relcl	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	ocean	ocean	NOUN	NN	Number=Sing	10	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hide** | present · passive | thick fog | It |  |  | time |  | vn concealment-16-1 «NP V NP»: agent=Agent subject=Patient |
| 2 | **cross** | present | fog | the ocean |  |  |  |  | vn crane-40.3.2 «NP V NP»: agent=Agent ocean=Patient |

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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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