---
title: A tower crane works like a seesaw. — Diggers, cranes and cement mixers · tree and pragmatics
description: A tower crane works like a seesaw. Who acts: tower crane. A sentence of the lesson «Diggers, cranes and cement mixers» of the technology course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Diggers, cranes and cement mixers, sentence 5

<!-- .ven lang=en -->
A tower crane works like a seesaw.

<!-- .vintro -->
**Who acts:** tower crane · **What happens:** work

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This is a sentence of the lesson «Diggers, cranes and cement mixers» 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 (tower crane), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:028-diggers-cranes-and-cement-mixers.lesson:5
# text = A tower crane works like a seesaw.
# source = school lesson (ours)
# course = technology
# lesson = 028-diggers-cranes-and-cement-mixers.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	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	tower	tower	NOUN	NN	Number=Sing	3	compound	_	_
3	crane	crane	NOUN	NN	Number=Sing	4	nsubj	_	_
4	works	work	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	like	like	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	seesaw	seesaw	NOUN	NN	Number=Sing	4	obl	_	_
8	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work** | present | a tower crane |  |  |  |  | like a seesaw | vn employment-95.3 «NP V»: agent=Agent |

<!-- .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.

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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:028-diggers-cranes-and-cement-mixers.lesson:5`.

**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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