---
title: A shadow forms where an opaque object blocks the light. — Light, shadows and colours · tree and pragmatics
description: A shadow forms where an opaque object blocks the light. Who acts: shadow, opaque object. A sentence of the lesson «Light, 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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# Light, shadows and colours, sentence 12

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A shadow forms where an opaque object blocks the light.

<!-- .vintro -->
**Who acts:** shadow, opaque object · **What happens:** form, block · **To what, where:** light

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This is a sentence of the lesson «Light, 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 (shadow, opaque object), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:053-light.lesson:12
# text = A shadow forms where an opaque object blocks the light.
# source = school lesson (ours)
# course = world
# lesson = 053-light.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	2	det	_	_
2	shadow	shadow	NOUN	NN	Number=Sing	3	nsubj	_	_
3	forms	form	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	where	where	ADV	WRB	PronType=Rel	8	advmod	_	_
5	an	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	Agree=R5-strong|Haiku=8:det
6	opaque	opaque	ADJ	JJ	Degree=Pos	7	amod	_	_
7	object	object	NOUN	NN	Number=Sing	8	nsubj	_	_
8	blocks	block	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	light	light	NOUN	NN	Number=Sing	8	obj	_	_
11	.	.	PUNCT	.	_	3	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 | **form** | present | a shadow |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 2 | **block** | present | a opaque object | the light |  |  |  |  | vn forbid-64.4-1 «NP V NP»: agent=Causer light=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:053-light.lesson:12`.

**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/).

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