---
title: A rectangle covered by rows of unit squares has length × width of th… — The area of a rectangle in square units · tree and pragmatics
description: A rectangle covered by rows of unit squares has length × width of them. Who acts: rectangle. A sentence of the lesson «The area of a rectangle in square units» of the lessons course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# The area of a rectangle in square units, sentence 1

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A rectangle covered by rows of unit squares has length × width of them.

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**Who acts:** rectangle · **What happens:** cover, have · **To what, where:** rectangle, length

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This is a sentence of the lesson «The area of a rectangle in square units» of the lessons 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 (rectangle), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:lessons:106-area-of-a-rectangle.lesson:1
# text = A rectangle covered by rows of unit squares has length × width of them.
# source = school lesson (ours)
# course = lessons
# lesson = 106-area-of-a-rectangle.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	2	det	_	_
2	rectangle	rectangle	NOUN	NN	Number=Sing	9	nsubj	_	_
3	covered	cover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	acl	_	_
4	by	by	ADP	IN	_	5	case	_	_
5	rows	row	NOUN	NNS	Number=Plur	3	obl	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	unit	unit	NOUN	NN	Number=Sing	8	compound	_	_
8	squares	square	NOUN	NNS	Number=Plur	5	nmod	_	_
9	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	length	length	NOUN	NN	Number=Sing	9	obj	_	_
11	×	×	SYM	SYM	_	10	flat	_	_
12	width	width	NOUN	NN	Number=Sing	10	conj	_	_
13	of	of	ADP	IN	_	14	case	_	_
14	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	12	nmod	_	_
15	.	.	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 | **cover** | participle |  | a rectangle *not said here* |  |  |  | by rows of unit squares | vn fill-9.8-1 «NP V NP»: agent=Theme |
| 2 | **have** | present | a rectangle | length and width of squares |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent length=Patient |

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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:lessons:106-area-of-a-rectangle.lesson:1`.

**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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