---
title: A leaf's chlorophyll soaks up red and blue light and sends back gree… — Leaves, fruit and colour in nature · tree and pragmatics
description: A leaf's chlorophyll soaks up red and blue light and sends back green, so the leaf looks green. Who acts: chlorophyll, leaf. A sentence of the lesson «Leaves, fruit and colour in nature» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Leaves, fruit and colour in nature, sentence 3

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A leaf's chlorophyll soaks up red and blue light and sends back green, so the leaf looks green.

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**Who acts:** chlorophyll, leaf · **What happens:** soak up, send back, look · **To what, where:** red light, green

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This is a sentence of the lesson «Leaves, fruit and colour in nature» 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 (chlorophyll, leaf), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:028-colour-in-nature.lesson:3
# text = A leaf's chlorophyll soaks up red and blue light and sends back green, so the leaf looks green.
# source = school lesson (ours)
# course = chemistry
# lesson = 028-colour-in-nature.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, R8-pos-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	leaf	leaf	NOUN	NN	Number=Sing	4	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	chlorophyll	chlorophyll	NOUN	NN	Number=Sing	5	nsubj	_	_
5	soaks	soak	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	up	up	ADP	RP	_	5	compound:prt	_	Agree=R8-pos-agree|Haiku=5:compound:prt|HaikuPos=PART:RP:_
7	red	red	ADJ	JJ	Degree=Pos	10	amod	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	blue	blue	ADJ	JJ	Degree=Pos	7	conj	_	_
10	light	light	NOUN	NN	Number=Sing	5	obj	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	sends	send	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
13	back	back	ADV	RB	_	12	advmod	_	_
14	green	green	ADJ	JJ	Degree=Pos	12	obj	_	Agree=R7-rel-agree|Haiku=12:xcomp
15	,	,	PUNCT	,	_	19	punct	_	_
16	so	so	ADV	RB	_	19	advmod	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	leaf	leaf	NOUN	NN	Number=Sing	19	nsubj	_	_
19	looks	look	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
20	green	green	ADJ	JJ	Degree=Pos	19	xcomp	_	_
21	.	.	PUNCT	.	_	5	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 | **soak up** | present | a leaf's chlorophyll | red light |  |  |  |  | vn wipe\_manner-10.4.1 «NP V NP.source»: agent=Agent light=Source |
| 2 | **send back** | present | a leaf's chlorophyll *not said here* | green |  |  |  |  | vn confine-92-1 «NP V NP»: agent=Agent green=Theme |
| 3 | **look** | present | the leaf |  |  |  |  | green *property* | vn stimulus\_subject-30.4 «NP V ADJ»: agent=Stimulus |

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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:028-colour-in-nature.lesson:3`.

**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, R8-pos-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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