---
title: Locks are deep, so stay back from the edge. — Ships, ports and submarines · tree and pragmatics
description: Locks are deep, so stay back from the edge. Who acts: Locks. A sentence of the lesson «Ships, ports and submarines» of the technology course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Ships, ports and submarines, sentence 18

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Locks are deep, so stay back from the edge.

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**Who acts:** Locks · **What happens:** be, stay back

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This is a sentence of the lesson «Ships, ports and submarines» of the technology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Locks), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:024-ships-ports-and-submarines.lesson:18
# text = Locks are deep, so stay back from the edge.
# source = school lesson (ours)
# course = technology
# lesson = 024-ships-ports-and-submarines.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×1
1	Locks	lock	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	deep	deep	ADJ	JJ	Degree=Pos	0	root	_	_
4	,	,	PUNCT	,	_	6	punct	_	_
5	so	so	ADV	RB	_	6	advmod	_	_
6	stay	stay	VERB	VB	VerbForm=Inf	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
7	back	back	ADV	RB	_	6	advmod	_	_
8	from	from	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	edge	edge	NOUN	NN	Number=Sing	7	obl	_	_
11	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Locks |  |  |  |  | deep *property* | tree rules |
| 2 | **stay back** | infinitive |  |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |

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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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:technology:024-ships-ports-and-submarines.lesson:18`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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