---
title: Your eye is like a camera: the clear front and the lens bend light s… — The optician and glasses · tree and pragmatics
description: Your eye is like a camera: the clear front and the lens bend light so it focuses in a sharp picture on the retina at the back. Who acts: eye, clear front. A sentence of the lesson «The optician and glasses» of the medicine course of Mova's primary school with its dependency tree and the pragmatics o
---

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# The optician and glasses, sentence 0

<!-- .ven lang=en -->
Your eye is like a camera: the clear front and the lens bend light so it focuses in a sharp picture on the retina at the back.

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**Who acts:** eye, clear front · **What happens:** be, bend, focus · **To what, where:** light, sharp picture

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This is a sentence of the lesson «The optician and glasses» of the medicine 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, clear front), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:027-the-optician-and-glasses.lesson:0
# text = Your eye is like a camera: the clear front and the lens bend light so it focuses in a sharp picture on the retina at the back.
# source = school lesson (ours)
# course = medicine
# lesson = 027-the-optician-and-glasses.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	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	eye	eye	NOUN	NN	Number=Sing	6	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	like	like	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	camera	camera	NOUN	NN	Number=Sing	0	root	_	_
7	:	:	PUNCT	:	_	6	punct	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
9	clear	clear	ADJ	JJ	Degree=Pos	10	amod	_	_
10	front	front	NOUN	NN	Number=Sing	14	nsubj	_	_
11	and	and	CCONJ	CC	_	13	cc	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	Agree=R5-strong|Haiku=15:det
13	lens	lens	NOUN	NN	Number=Sing	10	conj	_	_
14	bend	bend	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	parataxis	_	_
15	light	light	NOUN	NN	Number=Sing	14	obj	_	_
16	so	so	ADV	RB	_	18	advmod	_	_
17	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	nsubj	_	_
18	focuses	focus	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	conj	_	_
19	in	in	ADP	IN	_	22	case	_	_
20	a	a	DET	DT	Definite=Ind|PronType=Art	22	det	_	_
21	sharp	sharp	ADJ	JJ	Degree=Pos	22	amod	_	_
22	picture	picture	NOUN	NN	Number=Sing	18	obl	_	_
23	on	on	ADP	IN	_	25	case	_	_
24	the	the	DET	DT	Definite=Def|PronType=Art	25	det	_	_
25	retina	retina	NOUN	NN	Number=Sing	22	nmod	_	_
26	at	at	ADP	IN	_	28	case	_	_
27	the	the	DET	DT	Definite=Def|PronType=Art	28	det	_	_
28	back	back	NOUN	NN	Number=Sing	25	nmod	_	_
29	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: changed act=assert, polarity=none

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Your eye |  |  |  |  | like a camera | tree rules |
| 2 | **bend** | present | the clear front and the lens | light |  |  |  |  | vn knead-26.5 «NP V NP.material»: agent=Agent light=Material |
| 3 | **focus** | present | eye |  |  | a sharp picture on the retina at the back |  |  | vn focus-87.1 «NP V PP.topic»: 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:medicine:027-the-optician-and-glasses.lesson:0`.

**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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