---
title: The eye sees light that enters through the pupil; the lens focuses i… — The brain, nerves and the five senses · tree and pragmatics
description: The eye sees light that enters through the pupil; the lens focuses it at the back of the eye. Who acts: eye, light, lens. A sentence of the lesson «The brain, nerves and the five senses» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# The brain, nerves and the five senses, sentence 17

<!-- .ven lang=en -->
The eye sees light that enters through the pupil; the lens focuses it at the back of the eye.

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**Who acts:** eye, light, lens · **What happens:** see, enter, focus · **To what, where:** light, back

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This is a sentence of the lesson «The brain, nerves and the five senses» 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 (eye, light, lens), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:034-brain-nerves-senses.lesson:17
# text = The eye sees light that enters through the pupil; the lens focuses it at the back of the eye.
# source = school lesson (ours)
# course = world
# lesson = 034-brain-nerves-senses.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	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	eye	eye	NOUN	NN	Number=Sing	3	nsubj	_	_
3	sees	see	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	light	light	NOUN	NN	Number=Sing	3	obj	_	_
5	that	that	PRON	WDT	PronType=Rel	6	nsubj	_	_
6	enters	enter	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
7	through	through	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	pupil	pupil	NOUN	NN	Number=Sing	6	obl	_	_
10	;	;	PUNCT	:	_	13	punct	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	lens	lens	NOUN	NN	Number=Sing	13	nsubj	_	_
13	focuses	focus	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
14	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	13	obj	_	_
15	at	at	ADP	IN	_	17	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	back	back	NOUN	NN	Number=Sing	13	obl	_	_
18	of	of	ADP	IN	_	20	case	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	eye	eye	NOUN	NN	Number=Sing	17	nmod	_	_
21	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | present | the eye | light |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer light=Stimulus |
| 2 | **enter** | present | light |  |  |  |  | through the pupil | vn escape-51.1-1-2 «NP V PP.initial\_location»: agent=Theme through pupil=Initial\_Location |
| 3 | **focus** | present | the lens | light |  | the back of the eye |  |  | tree rules |

<!-- .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:034-brain-nerves-senses.lesson:17`.

**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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