---
title: The colour comes from iron in the enamel, which makes the tooth hard… — Rodents: the biggest group of mammals and their… · tree and pragmatics
description: The colour comes from iron in the enamel, which makes the tooth harder. Who acts: colour, enamel. A sentence of the lesson «Rodents: the biggest group of mammals and their ever-growing teeth» of the biology course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Rodents: the biggest group of mammals and their ever-growing teeth, sentence 5

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The colour comes from iron in the enamel, which makes the tooth harder.

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**Who acts:** colour, enamel · **What happens:** come, make · **To what, where:** iron, tooth

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This is a sentence of the lesson «Rodents: the biggest group of mammals and their ever-growing teeth» of the biology 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 (colour, enamel), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:316-rodents-the-biggest-group-of-mammals-and-their-ever-growing-teeth.lesson:5
# text = The colour comes from iron in the enamel, which makes the tooth harder.
# source = school lesson (ours)
# course = biology
# lesson = 316-rodents-the-biggest-group-of-mammals-and-their-ever-growing-teeth.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	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	colour	colour	NOUN	NN	Number=Sing	3	nsubj	_	_
3	comes	come	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	from	from	ADP	IN	_	5	case	_	_
5	iron	iron	NOUN	NN	Number=Sing	3	obl	_	_
6	in	in	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	enamel	enamel	NOUN	NN	Number=Sing	5	nmod	_	_
9	,	,	PUNCT	,	_	11	punct	_	_
10	which	which	PRON	WDT	PronType=Rel	11	nsubj	_	_
11	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	acl:relcl	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	tooth	tooth	NOUN	NN	Number=Sing	11	obj	_	_
14	harder	hard	ADJ	JJR	Degree=Cmp	11	xcomp	_	_
15	.	.	PUNCT	.	_	3	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 | **come** | present | the colour |  |  | iron in the enamel |  |  | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme from iron=Initial\_Location |
| 2 | **make** | present | the enamel | the tooth |  |  |  | hard *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset tooth=Product |

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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:biology:316-rodents-the-biggest-group-of-mammals-and-their-ever-growing-teeth.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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