---
title: A red filter lets only red light through and blocks the other colours. — Mirrors, shadows and colours · tree and pragmatics
description: A red filter lets only red light through and blocks the other colours. Who acts: red filter. A sentence of the lesson «Mirrors, shadows and colours» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Mirrors, shadows and colours, sentence 23

<!-- .ven lang=en -->
A red filter lets only red light through and blocks the other colours.

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**Who acts:** red filter · **What happens:** let through, block · **To what, where:** red light, other colours

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This is a sentence of the lesson «Mirrors, shadows and colours» of the world 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 (red filter), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:084-mirrors-shadows-colours.lesson:23
# text = A red filter lets only red light through and blocks the other colours.
# source = school lesson (ours)
# course = world
# lesson = 084-mirrors-shadows-colours.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): no change
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	red	red	ADJ	JJ	Degree=Pos	3	amod	_	_
3	filter	filter	NOUN	NN	Number=Sing	4	nsubj	_	_
4	lets	let	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	only	only	ADV	RB	_	7	advmod	_	_
6	red	red	ADJ	JJ	Degree=Pos	7	amod	_	_
7	light	light	NOUN	NN	Number=Sing	4	obj	_	_
8	through	through	ADV	RB	_	4	compound:prt	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	blocks	block	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	other	other	ADJ	JJ	Degree=Pos	13	amod	_	_
13	colours	colour	NOUN	NNS	Number=Plur	10	obj	_	_
14	.	.	PUNCT	.	_	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 | **let through** | present | a red filter | red light |  |  |  |  | vn give-13.1-1 «NP V NP»: agent=Agent light=Theme |
| 2 | **block** | present | a red filter *not said here* | the other colours |  |  |  |  | vn forbid-64.4-1 «NP V NP»: agent=Causer colour=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:world:084-mirrors-shadows-colours.lesson:23`.

**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): no change. **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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- ← previous: [Mirrors, shadows and colours, 22](https://md.mova.elamur.ai/free/en/corpora/school/world/84-mirrors-shadows-colours/22/)
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