---
title: Why is a tunnel in the sand more dangerous than a shallow castle moat? — Safe at lakes and beaches · tree and pragmatics
description: Why is a tunnel in the sand more dangerous than a shallow castle moat? Test 5 · ★★ of lesson 232 «Safe at lakes and beaches» of the everyday 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 5 · ★★ · Safe at lakes and beaches

<!-- .ven lang=en -->
Why is a tunnel in the sand more dangerous than a shallow castle moat?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** tunnel · **What happens:** be

<!-- .vabout -->
This is test 5 · ★★ of lesson 232 «Safe at lakes and beaches» of the everyday 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/everyday/232-lakes-and-beaches/#t5).

## The question {#question}

```conllu
# sent_id = question:everyday:232-lakes-and-beaches:t5:1
# text = Why is a tunnel in the sand more dangerous than a shallow castle moat?
1	Why	why	ADV	WRB	PronType=Int	9	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	tunnel	tunnel	NOUN	NN	Number=Sing	9	nsubj	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	sand	sand	NOUN	NN	Number=Sing	4	nmod	_	_
8	more	more	ADV	RBR	Degree=Cmp	9	advmod	_	_
9	dangerous	dangerous	ADJ	JJ	Degree=Pos	0	root	_	_
10	than	than	ADP	IN	_	14	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
12	shallow	shallow	ADJ	JJ	Degree=Pos	14	amod	_	_
13	castle	castle	NOUN	NN	Number=Sing	14	compound	_	_
14	moat	moat	NOUN	NN	Number=Sing	9	obl	_	SpaceAfter=No
15	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | a tunnel in the sand |  |  |  |  | than a shallow castle moat; dangerous *property* | 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 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The tunnel can collapse and bury a child

```conllu
# sent_id = question:everyday:232-lakes-and-beaches:t5:o1:1
# text = The tunnel can collapse and bury a child
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	tunnel	tunnel	NOUN	NN	Number=Sing	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	collapse	collapse	VERB	VB	VerbForm=Inf	0	root	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	bury	bury	VERB	VB	VerbForm=Inf	4	conj	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	child	child	NOUN	NN	Number=Sing	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **collapse** | can | the tunnel |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 2 | **bury** | infinitive | the tunnel *not said here* | a child |  |  |  |  | vn put-9.1-1 «NP V NP»: agent=Agent child=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Tunnels fill up with seawater the instant they are dug

```conllu
# sent_id = question:everyday:232-lakes-and-beaches:t5:o2:1
# text = Tunnels fill up with seawater the instant they are dug
1	Tunnels	tunnel	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	fill	fill	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	up	up	ADP	RP	_	2	compound:prt	_	_
4	with	with	ADP	IN	_	5	case	_	_
5	seawater	seawater	NOUN	NN	Number=Sing	2	obl	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	instant	instant	NOUN	NN	Number=Sing	2	parataxis	_	_
8	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	10	nsubj	_	_
9	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	aux:pass	_	_
10	dug	dig	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fill up** | present | Tunnels |  |  |  |  | with seawater | vn other\_cos-45.4 «NP V NP PP.instrument»: agent=Agent with seawater=Instrument |
| 2 | **dig** | present · passive |  | Tunnels *= tunnel* |  |  |  |  | vn poke-19-1-1-1 «NP V NP.theme»: subject=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Moats are where the crabs live

```conllu
# sent_id = question:everyday:232-lakes-and-beaches:t5:o3:1
# text = Moats are where the crabs live
1	Moats	moat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	where	where	ADV	WRB	PronType=Int	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	crabs	crab	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	live	live	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	advcl:relcl	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Castles are protected from the sea by the tide

```conllu
# sent_id = question:everyday:232-lakes-and-beaches:t5:o4:1
# text = Castles are protected from the sea by the tide
1	Castles	castle	NOUN	NNS	Number=Plur	3	nsubj:pass	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	protected	protect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	sea	sea	NOUN	NN	Number=Sing	3	obl	_	_
7	by	by	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	tide	tide	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **protect** | present · passive | the tide | Castles |  |  |  | from the sea | vn defend-72.3 «NP V NP PP.theme»: agent=Agent subject=Beneficiary from sea=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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- ← previous: [Safe at lakes and beaches, test 4](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/232-lakes-and-beaches/t4/)
- next →: [Safe at lakes and beaches, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/232-lakes-and-beaches/t6/)
- ↑ back to [Safe at lakes and beaches](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/232-lakes-and-beaches/)

