---
title: And a clever trick with foil, baking soda and hot water can even tur… — Tarnish and how metals change · tree and pragmatics
description: And a clever trick with foil, baking soda and hot water can even turn the black tarnish on silver back into silver. Who acts: clever trick. 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 every c
---

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# Tarnish and how metals change, sentence 7

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And a clever trick with foil, baking soda and hot water can even turn the black tarnish on silver back into silver.

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**Who acts:** clever trick · **What happens:** turn · **To what, where:** black tarnish, silver

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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 (clever trick), 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:7
# text = And a clever trick with foil, baking soda and hot water can even turn the black tarnish on silver back into silver.
# 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): R5-strong ×2, R6-punct-agree ×2
1	And	and	CCONJ	CC	_	4	cc	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	clever	clever	ADJ	JJ	Degree=Pos	4	amod	_	_
4	trick	trick	NOUN	NN	Number=Sing	15	nsubj	_	Agree=R5-strong|Haiku=0:root
5	with	with	ADP	IN	_	6	case	_	_
6	foil	foil	NOUN	NN	Number=Sing	4	nmod	_	_
7	,	,	PUNCT	,	_	9	punct	_	Agree=R6-punct-agree|Haiku=4:punct
8	baking	baking	NOUN	NN	Number=Sing	9	compound	_	_
9	soda	soda	NOUN	NN	Number=Sing	6	conj	_	_
10	and	and	CCONJ	CC	_	12	cc	_	_
11	hot	hot	ADJ	JJ	Degree=Pos	12	amod	_	_
12	water	water	NOUN	NN	Number=Sing	6	conj	_	_
13	can	can	AUX	MD	VerbForm=Fin	15	aux	_	_
14	even	even	ADV	RB	_	15	advmod	_	_
15	turn	turn	VERB	VB	VerbForm=Inf	0	root	_	Agree=R5-strong|Haiku=4:conj
16	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
17	black	black	ADJ	JJ	Degree=Pos	18	amod	_	_
18	tarnish	tarnish	NOUN	NN	Number=Sing	15	obj	_	_
19	on	on	ADP	IN	_	20	case	_	_
20	silver	silver	NOUN	NN	Number=Sing	18	nmod	_	_
21	back	back	ADV	RB	_	15	advmod	_	_
22	into	into	ADP	IN	_	23	case	_	_
23	silver	silver	NOUN	NN	Number=Sing	21	obl	_	_
24	.	.	PUNCT	.	_	15	punct	_	Agree=R6-punct-agree|Haiku=4: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 | **turn** | can | a clever trick with foil and baking soda and hot water | the black tarnish |  | silver |  |  | vn roll-51.3.1 «NP V NP.theme»: agent=Agent tarnish=Theme |

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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:chemistry:014-tarnish-and-how-metals-change.lesson:7`.

**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 ×2, R6-punct-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/).

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