---
title: Water pushed onto the beach by waves must flow back out to sea. — Thinking like a lifeguard · tree and pragmatics
description: Water pushed onto the beach by waves must flow back out to sea. Who acts: Water. A sentence of the lesson «Thinking like a lifeguard» of the everyday course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Thinking like a lifeguard, sentence 7

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Water pushed onto the beach by waves must flow back out to sea.

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**Who acts:** Water · **What happens:** push, flow · **To what, where:** Water, beach

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This is a sentence of the lesson «Thinking like a lifeguard» of the everyday 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 (Water), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:everyday:050-thinking-about-outdoor-safety.lesson:7
# text = Water pushed onto the beach by waves must flow back out to sea.
# source = school lesson (ours)
# course = everyday
# lesson = 050-thinking-about-outdoor-safety.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): no change
1	Water	water	NOUN	NN	Number=Sing	9	nsubj	_	_
2	pushed	push	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	1	acl	_	_
3	onto	onto	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	beach	beach	NOUN	NN	Number=Sing	2	obl	_	_
6	by	by	ADP	IN	_	7	case	_	_
7	waves	wave	NOUN	NNS	Number=Plur	2	obl:agent	_	_
8	must	must	AUX	MD	VerbForm=Fin	9	aux	_	_
9	flow	flow	VERB	VB	VerbForm=Inf	0	root	_	_
10	back	back	ADV	RB	_	11	advmod	_	_
11	out	out	ADV	RB	_	9	advmod	_	_
12	to	to	ADP	IN	_	13	case	_	_
13	sea	sea	NOUN	NN	Number=Sing	11	obl	_	_
14	.	.	PUNCT	.	_	9	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **push** | participle |  | Water *not said here* |  | the beach |  |  | vn push-12-1-1 «NP V PP.trajectory»: agent=Agent onto beach=Trajectory |
| 2 | **flow** | must | Water |  |  |  |  | out *property* | vn appear-48.1.1 «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:everyday:050-thinking-about-outdoor-safety.lesson:7`.

**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): no change. **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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