---
title: Silver darkens, copper goes dull brown and then green, and bronze st… — Tarnish and how metals change · tree and pragmatics
description: Silver darkens, copper goes dull brown and then green, and bronze statues in the park grow green streaks. Who acts: Silver, copper, bronze statues. A sentence of the lesson «Tarnish and how metals change» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of
---

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# Tarnish and how metals change, sentence 3

<!-- .ven lang=en -->
Silver darkens, copper goes dull brown and then green, and bronze statues in the park grow green streaks.

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**Who acts:** Silver, copper, bronze statues · **What happens:** darken, go, grow · **To what, where:** green streaks

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This is a sentence of the lesson «Tarnish and how metals change» 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 (Silver, copper, bronze statues), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:014-tarnish-and-how-metals-change.lesson:3
# text = Silver darkens, copper goes dull brown and then green, and bronze statues in the park grow green streaks.
# source = school lesson (ours)
# course = chemistry
# lesson = 014-tarnish-and-how-metals-change.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): R7-rel-agree ×1
1	Silver	silver	NOUN	NN	Number=Sing	2	nsubj	_	_
2	darkens	darken	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	,	,	PUNCT	,	_	5	punct	_	_
4	copper	copper	NOUN	NN	Number=Sing	5	nsubj	_	_
5	goes	go	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
6	dull	dull	ADJ	JJ	Degree=Pos	7	amod	_	_
7	brown	brown	ADJ	JJ	Degree=Pos	5	xcomp	_	_
8	and	and	CCONJ	CC	_	10	cc	_	_
9	then	then	ADV	RB	PronType=Dem	10	advmod	_	_
10	green	green	ADJ	JJ	Degree=Pos	7	conj	_	_
11	,	,	PUNCT	,	_	18	punct	_	_
12	and	and	CCONJ	CC	_	18	cc	_	_
13	bronze	bronze	NOUN	NN	Number=Sing	14	compound	_	Agree=R7-rel-agree|Haiku=14:amod|HaikuPos=ADJ:JJ:Degree=Pos
14	statues	statue	NOUN	NNS	Number=Plur	18	nsubj	_	_
15	in	in	ADP	IN	_	17	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	park	park	NOUN	NN	Number=Sing	14	nmod	_	_
18	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
19	green	green	ADJ	JJ	Degree=Pos	20	amod	_	_
20	streaks	streak	NOUN	NNS	Number=Plur	18	obj	_	_
21	.	.	PUNCT	.	_	2	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 | **darken** | present | Silver |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 2 | **go** | present | copper |  |  |  |  | brown *property* | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 3 | **grow** | present | bronze statues in the park | green streaks |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location streak=Theme |

<!-- .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:chemistry:014-tarnish-and-how-metals-change.lesson:3`.

**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): R7-rel-agree ×1. **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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