---
title: A wireless charger has a coil in the pad that makes a changing magne… — Batteries · tree and pragmatics
description: A wireless charger has a coil in the pad that makes a changing magnetic field, and a coil in the phone turns it back into electricity; electric toothbrushes have charged this way for years. Who acts: wireless charger, pad, coil, electric toothbrushes. A sentence of the lesson «Batteries» of the tech
---

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# Batteries, sentence 16

<!-- .ven lang=en -->
A wireless charger has a coil in the pad that makes a changing magnetic field, and a coil in the phone turns it back into electricity; electric toothbrushes have charged this way for years.

<!-- .vintro -->
**Who acts:** wireless charger, pad, coil, electric toothbrushes · **What happens:** have, make, change, turn, charge · **To what, where:** coil, pad, changing magnetic field, field, way

<!-- .vabout -->
This is a sentence of the lesson «Batteries» of the technology 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 (wireless charger, pad, coil, electric toothbrushes), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:034-batteries.lesson:16
# text = A wireless charger has a coil in the pad that makes a changing magnetic field, and a coil in the phone turns it back into electricity; electric toothbrushes have charged this way for years.
# source = school lesson (ours)
# course = technology
# lesson = 034-batteries.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 ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	wireless	wireless	ADJ	JJ	Degree=Pos	3	amod	_	_
3	charger	charger	NOUN	NN	Number=Sing	4	nsubj	_	_
4	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	coil	coil	NOUN	NN	Number=Sing	4	obj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	pad	pad	NOUN	NN	Number=Sing	6	nmod	_	_
10	that	that	PRON	WDT	PronType=Rel	11	nsubj	_	_
11	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	acl:relcl	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
13	changing	change	VERB	VBG	VerbForm=Ger	15	amod	_	_
14	magnetic	magnetic	ADJ	JJ	Degree=Pos	15	amod	_	_
15	field	field	NOUN	NN	Number=Sing	11	obj	_	_
16	,	,	PUNCT	,	_	23	punct	_	_
17	and	and	CCONJ	CC	_	23	cc	_	_
18	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
19	coil	coil	NOUN	NN	Number=Sing	23	nsubj	_	_
20	in	in	ADP	IN	_	22	case	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	phone	phone	NOUN	NN	Number=Sing	19	nmod	_	_
23	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	Agree=R5-strong|Haiku=11:conj
24	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	23	obj	_	_
25	back	back	ADV	RB	_	23	advmod	_	_
26	into	into	ADP	IN	_	27	case	_	_
27	electricity	electricity	NOUN	NN	Number=Sing	25	obl	_	_
28	;	;	PUNCT	:	_	32	punct	_	_
29	electric	electric	ADJ	JJ	Degree=Pos	30	amod	_	_
30	toothbrushes	toothbrush	NOUN	NNS	Number=Plur	32	nsubj	_	_
31	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	32	aux	_	_
32	charged	charge	VERB	VBN	Tense=Past|VerbForm=Part	4	parataxis	_	_
33	this	this	DET	DT	Number=Sing|PronType=Dem	34	det	_	_
34	way	way	NOUN	NN	Number=Sing	32	obl	_	_
35	for	for	ADP	IN	_	36	case	_	_
36	years	year	NOUN	NNS	Number=Plur	32	obl	_	_
37	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | a wireless charger | a coil |  | the pad |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent coil=Patient |
| 2 | **make** | present | the pad | a changing magnetic field |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset field=Product |
| 3 | **change** | gerund |  |  |  |  |  |  | vn dress-41.1.1-1-1 «NP V»: agent=Agent |
| 4 | **turn** | present | a coil in the phone | field |  |  |  |  | vn roll-51.3.1 «NP V NP.theme»: agent=Agent it=Theme |
| 5 | **charge** | present · perfect | electric toothbrushes | this way |  |  | year |  | vn run-51.3.2 «NP V»: agent=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:technology:034-batteries.lesson:16`.

**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 ×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/).

<!-- /div -->

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