---
title: Bronze is an alloy of copper and tin; it is harder than either metal… — Metals and what they're good for · tree and pragmatics
description: Bronze is an alloy of copper and tin; it is harder than either metal, and the Bronze Age began over 5000 years ago. Who acts: Bronze, Bronze Age. A sentence of the lesson «Metals and what they're good for» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics o
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/31-metals-what-theyre-good-for/9/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/) / [Metals and what they're good for](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/31-metals-what-theyre-good-for/) / 9

# Metals and what they're good for, sentence 9

<!-- .ven lang=en -->
Bronze is an alloy of copper and tin; it is harder than either metal, and the Bronze Age began over 5000 years ago.

<!-- .vintro -->
**Who acts:** Bronze, Bronze Age · **What happens:** be, begin · **To what, where:** alloy

<!-- .vabout -->
This is a sentence of the lesson «Metals and what they're good for» of the chemistry 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 (Bronze, Bronze Age), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:031-metals-what-theyre-good-for.lesson:9
# text = Bronze is an alloy of copper and tin; it is harder than either metal, and the Bronze Age began over 5000 years ago.
# source = school lesson (ours)
# course = chemistry
# lesson = 031-metals-what-theyre-good-for.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): R5-strong ×3, R7-rel-agree ×1, R8-pos-agree ×2
1	Bronze	bronze	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	an	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	alloy	alloy	NOUN	NN	Number=Sing	0	root	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	copper	copper	NOUN	NN	Number=Sing	4	nmod	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	tin	tin	NOUN	NN	Number=Sing	6	conj	_	_
9	;	;	PUNCT	:	_	12	punct	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
11	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
12	harder	hard	ADJ	JJR	Degree=Cmp	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
13	than	than	ADP	IN	_	15	case	_	_
14	either	either	DET	DT	_	15	det	_	_
15	metal	metal	NOUN	NN	Number=Sing	12	obl	_	_
16	,	,	PUNCT	,	_	21	punct	_	_
17	and	and	CCONJ	CC	_	21	cc	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	Bronze	Bronze	PROPN	NNP	Number=Sing	20	compound	_	Agree=R8-pos-agree|Haiku=20:compound|HaikuPos=NOUN:NN:Number=Sing
20	Age	age	PROPN	NNP	Number=Sing	21	nsubj	_	Agree=R8-pos-agree|Haiku=21:nsubj|HaikuPos=NOUN:NN:Number=Sing
21	began	begin	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	12	conj	_	_
22	over	over	ADV	RB	_	23	advmod	_	Agree=R5-strong|Haiku=24:case|HaikuPos=ADP:IN:_
23	5000	5000	NUM	CD	NumForm=Digit|NumType=Card	24	nummod	_	_
24	years	year	NOUN	NNS	Number=Plur	25	obl	_	Agree=R5-strong|Haiku=21:obl
25	ago	ago	ADV	RB	_	21	advmod	_	Agree=R5-strong|Haiku=24:advmod
26	.	.	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 | **is a** | present | Bronze | a alloy |  |  |  | of copper and tin | tree rules |
| 2 | **is** | present | bronze |  |  |  |  | than either metal; hard *property* | tree rules |
| 3 | **begin** | past | the Bronze Age |  |  |  |  | ago *property* | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |

<!-- .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.

<!-- div src -->

**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:chemistry:031-metals-what-theyre-good-for.lesson:9`.

**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): R5-strong ×3, R7-rel-agree ×1, R8-pos-agree ×2. **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/).

<!-- /div -->

<!-- pn -->
- ← previous: [Metals and what they're good for, 8](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/31-metals-what-theyre-good-for/8/)
- next →: [Metals and what they're good for, 10](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/31-metals-what-theyre-good-for/10/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/31-metals-what-theyre-good-for/)

