---
title: In a solar panel, light hits special silicon cells and knocks tiny e… — Wind, sun and other clean energy · tree and pragmatics
description: In a solar panel, light hits special silicon cells and knocks tiny electrons free, which flow as electricity; panels still work on cloudy days and in winter, just less. Who acts: light, tiny electrons, panels. A sentence of the lesson «Wind, sun and other clean energy» of the technology course of Mo
---

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# Wind, sun and other clean energy, sentence 10

<!-- .ven lang=en -->
In a solar panel, light hits special silicon cells and knocks tiny electrons free, which flow as electricity; panels still work on cloudy days and in winter, just less.

<!-- .vintro -->
**Who acts:** light, tiny electrons, panels · **What happens:** hit, knock, flow, work · **To what, where:** special silicon cells, solar panel, tiny electrons

<!-- .vabout -->
This is a sentence of the lesson «Wind, sun and other clean energy» 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 (light, tiny electrons, panels), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:033-wind-sun-and-other-clean-energy.lesson:10
# text = In a solar panel, light hits special silicon cells and knocks tiny electrons free, which flow as electricity; panels still work on cloudy days and in winter, just less.
# source = school lesson (ours)
# course = technology
# lesson = 033-wind-sun-and-other-clean-energy.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	In	in	ADP	IN	_	4	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	solar	solar	ADJ	JJ	Degree=Pos	4	amod	_	_
4	panel	panel	NOUN	NN	Number=Sing	7	obl	_	_
5	,	,	PUNCT	,	_	7	punct	_	_
6	light	light	NOUN	NN	Number=Sing	7	nsubj	_	_
7	hits	hit	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
8	special	special	ADJ	JJ	Degree=Pos	10	amod	_	_
9	silicon	silicon	NOUN	NN	Number=Sing	10	compound	_	_
10	cells	cell	NOUN	NNS	Number=Plur	7	obj	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	knocks	knock	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	conj	_	_
13	tiny	tiny	ADJ	JJ	Degree=Pos	14	amod	_	_
14	electrons	electron	NOUN	NNS	Number=Plur	12	obj	_	_
15	free	free	ADJ	JJ	Degree=Pos	14	amod	_	_
16	,	,	PUNCT	,	_	18	punct	_	_
17	which	which	PRON	WDT	PronType=Rel	18	nsubj	_	_
18	flow	flow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	14	acl:relcl	_	_
19	as	as	ADP	IN	_	20	case	_	_
20	electricity	electricity	NOUN	NN	Number=Sing	18	obl	_	Agree=R7-rel-agree|Haiku=18:nmod
21	;	;	PUNCT	,	_	22	punct	_	_
22	panels	panel	NOUN	NNS	Number=Plur	24	nsubj	_	_
23	still	still	ADV	RB	_	24	advmod	_	_
24	work	work	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	parataxis	_	_
25	on	on	ADP	IN	_	27	case	_	_
26	cloudy	cloudy	ADJ	JJ	Degree=Pos	27	amod	_	_
27	days	day	NOUN	NNS	Number=Plur	24	obl	_	_
28	and	and	CCONJ	CC	_	33	cc	_	_
29	in	in	ADP	IN	_	30	case	_	_
30	winter	winter	NOUN	NN	Number=Sing	33	obl	_	_
31	,	,	PUNCT	,	_	30	punct	_	_
32	just	just	ADV	RB	_	33	advmod	_	_
33	less	less	ADJ	JJR	Degree=Cmp	24	conj	_	_
34	.	.	PUNCT	.	_	7	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 | **hit** | present | light | special silicon cells |  | a solar panel |  |  | vn throw-17.1-1 «NP V NP PP.destinations»: agent=Agent cell=Theme in panel=Destination |
| 2 | **knock** | present | light *not said here* | tiny electrons |  |  |  |  | vn split-23.2 «NP V NP apart»: agent=Agent electron=Patient |
| 3 | **flow** | present | tiny electrons |  |  |  |  | as electricity | vn appear-48.1.1 «NP V»: agent=Theme |
| 4 | **work** | present | panels |  |  |  | still; day |  | vn employment-95.3 «NP V»: agent=Agent |

<!-- .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:033-wind-sun-and-other-clean-energy.lesson:10`.

**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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