---
title: Why is staring at the Sun extra dangerous, compared with touching so… — Lenses and eyes · tree and pragmatics
description: Why is staring at the Sun extra dangerous, compared with touching something hot? Test 4 · ★★ of lesson 22 «Lenses and eyes» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 4 · ★★ · Lenses and eyes

<!-- .ven lang=en -->
Why is staring at the Sun extra dangerous, compared with touching something hot?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** stare, compare, touch · **To what, where:** something

<!-- .vabout -->
This is test 4 · ★★ of lesson 22 «Lenses and eyes» of the physics course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/22-lenses-and-eyes/#t4).

## The question {#question}

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t4:1
# text = Why is staring at the Sun extra dangerous, compared with touching something hot?
1	Why	why	ADV	WRB	PronType=Int	3	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	staring	stare	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
4	at	at	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	Sun	Sun	PROPN	NNP	Number=Sing	3	obl	_	_
7	extra	extra	ADJ	JJ	Degree=Pos	8	amod	_	_
8	dangerous	dangerous	ADJ	JJ	Degree=Pos	3	xcomp	_	SpaceAfter=No
9	,	,	PUNCT	,	_	10	punct	_	_
10	compared	compare	VERB	VBN	Tense=Past|VerbForm=Part	3	conj	_	_
11	with	with	SCONJ	IN	_	12	mark	_	_
12	touching	touch	VERB	VBG	Tense=Pres|VerbForm=Part	10	advcl	_	_
13	something	something	PRON	NN	Number=Sing|PronType=Ind	12	obj	_	_
14	hot	hot	ADJ	JJ	Degree=Pos	13	amod	_	SpaceAfter=No
15	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stare** | present · progressive |  |  |  |  |  | at the Sun; dangerous *property* | vn peer-30.3 «NP V PP.theme»: agent=Agent at sun=Theme |
| 2 | **compare** | participle |  |  |  |  |  |  | vn amalgamate-22.2-2 «NP V ADVP-Middle»: agent=Patient |
| 3 | **touch** | gerund |  | something |  |  |  |  | vn contiguous\_location-47.8-1 «NP V NP»: agent=Theme something=Co-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.

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The damage does not hurt, so you do not know to stop

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t4:o1:1
# text = The damage does not hurt, so you do not know to stop
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	damage	damage	NOUN	NN	Number=Sing	5	nsubj	_	_
3	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	not	not	PART	RB	Polarity=Neg	5	advmod	_	_
5	hurt	hurt	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
6	,	,	PUNCT	,	_	11	punct	_	_
7	so	so	ADV	RB	_	11	advmod	_	_
8	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	11	nsubj	_	_
9	do	do	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	11	aux	_	_
10	not	not	PART	RB	Polarity=Neg	11	advmod	_	_
11	know	know	VERB	VB	VerbForm=Inf	5	parataxis	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	stop	stop	VERB	VB	VerbForm=Inf	11	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **hurt** | present · do-support | the damage |  |  |  |  |  | vn amuse-31.1 «NP V ADV-Middle»: agent=Experiencer |
| 2 | **not** **know** | present · do-support | you |  |  |  |  |  | vn comprehend-87.2-1-1-1 «NP V how S\_INF»: agent=Experiencer clause=Stimulus |
| 3 | **stop** | to-infinitive | you *not said here* |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

### Option 2 {#o2}

<!-- .ven lang=en -->
It only harms people who wear glasses or contact lenses

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t4:o2:1
# text = It only harms people who wear glasses or contact lenses
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	harms	harm	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	people	people	NOUN	NNS	Number=Plur	3	obj	_	_
5	who	who	PRON	WP	PronType=Rel	6	nsubj	_	_
6	wear	wear	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
7	glasses	glass	NOUN	NNS	Number=Plur	6	obj	_	_
8	or	or	CCONJ	CC	_	10	cc	_	_
9	contact	contact	NOUN	NN	Number=Sing	10	compound	_	_
10	lenses	lens	NOUN	NNS	Number=Plur	7	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **harm** | present | It | people |  |  |  |  | vn amuse-31.1 «NP V NP»: agent=Stimulus people=Experiencer |
| 2 | **wear** | present | people | glasses or contact lenses |  |  |  |  | vn wipe\_manner-10.4.1-1 «NP V NP.source»: agent=Agent glass=Source |

### Option 3 {#o3}

<!-- .ven lang=en -->
It hurts so much that you stop at once

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t4:o3:1
# text = It hurts so much that you stop at once
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	hurts	hurt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	so	so	ADV	RB	_	4	advmod	_	_
4	much	much	ADV	RB	_	2	advmod	_	_
5	that	that	SCONJ	IN	_	7	mark	_	_
6	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	7	nsubj	_	_
7	stop	stop	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	2	advcl	_	_
8	at	at	ADP	IN	_	9	case	_	_
9	once	once	ADV	RB	NumForm=Word|NumType=Mult	7	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hurt** | present | It |  |  |  |  |  | vn amuse-31.1 «NP V NP-PRO-ARB»: agent=Stimulus |
| 2 | **stop** | present | you |  |  |  |  |  | vn lodge-46 «NP V PP.location»: agent=Theme at once=Location |

### Option 4 {#o4}

<!-- .ven lang=en -->
It only damages your eyelids

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t4:o4:1
# text = It only damages your eyelids
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	damages	damage	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	eyelids	eyelid	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **damage** | present | It | your eyelids |  |  |  |  | vn destroy-44 «NP.instrument V NP»: agent=Instrument eyelid=Patient |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Lenses and eyes, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/t3/)
- next →: [Lenses and eyes, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/t5/)
- ↑ back to [Lenses and eyes](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/)