---
title: Identify the principal reason for which parents restrict the duratio… — Screens, diets, sofas and late nights · tree and pragmatics
description: Identify the principal reason for which parents restrict the duration of their children's use of electronic screens. Exam question 1 of lesson 29 «Screens, diets, sofas and late nights» of the adult life course of Mova's primary school, with the dependency tree and pragmatics of the question and of 
---

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# Exam question 1 · Screens, diets, sofas and late nights

<!-- .ven lang=en -->
Identify the principal reason for which parents restrict the duration of their children's use of electronic screens.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** you, parents, children · **What happens:** identify, restrict, use · **To what, where:** principal reason, duration, electronic screens

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This is exam question 1 of lesson 29 «Screens, diets, sofas and late nights» of the adult life course of Mova's primary school, asked in stiff, formal language. 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/adult-life/29-screens-diets-sofas-and-late-nights/#e1).

## The question {#question}

```conllu
# sent_id = question:adult-life:29-screens-diets-sofas-and-late-nights:e1:1
# text = Identify the principal reason for which parents restrict the duration of their children's use of electronic screens.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	PRON	WDT	PronType=Rel	8	obl	_	_
7	parents	parent	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	restrict	restrict	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	duration	duration	NOUN	NN	Number=Sing	8	obj	_	_
11	of	of	ADP	IN	_	15	case	_	_
12	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
13	children	child	NOUN	NNS	Number=Plur	15	nmod:poss	_	SpaceAfter=No
14	's	's	PART	POS	_	13	case	_	_
15	use	use	NOUN	NN	Number=Sing	10	nmod	_	_
16	of	of	ADP	IN	_	18	case	_	_
17	electronic	electronic	ADJ	JJ	Degree=Pos	18	amod	_	_
18	screens	screen	NOUN	NNS	Number=Plur	15	nmod	_	SpaceAfter=No
19	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal reason |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme |
| 2 | **restrict** | present | parents | the duration of parents's children's use of electronic screens |  |  |  | for the principal reason | vn limit-76 «NP V NP»: agent=Causer duration=Patient |
| 3 | **use** |  | parents's children | electronic screens |  |  |  |  | nom use «act transitive»: poss=agent of=patient |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Screens are harmful exclusively to adults

```conllu
# sent_id = question:adult-life:29-screens-diets-sofas-and-late-nights:e1:o1:1
# text = Screens are harmful exclusively to adults
1	Screens	screen	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	harmful	harmful	ADJ	JJ	Degree=Pos	0	root	_	_
4	exclusively	exclusively	ADV	RB	_	3	advmod	_	_
5	to	to	ADP	IN	_	6	case	_	_
6	adults	adult	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Screens |  |  |  |  | to adults; exclusively, harmful *property* | tree rules |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Excessive use is detrimental to sleep, mood and play

```conllu
# sent_id = question:adult-life:29-screens-diets-sofas-and-late-nights:e1:o2:1
# text = Excessive use is detrimental to sleep, mood and play
1	Excessive	excessive	ADJ	JJ	Degree=Pos	2	amod	_	_
2	use	use	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	detrimental	detrimental	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	sleep	sleep	VERB	VB	VerbForm=Inf	4	xcomp	_	SpaceAfter=No
7	,	,	PUNCT	,	_	8	punct	_	_
8	mood	mood	NOUN	NN	Number=Sing	4	conj	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	play	play	NOUN	NN	Number=Sing	8	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Excessive use |  |  |  |  | detrimental *property* | tree rules |
| 2 | **sleep** | to-infinitive | Excessive use *not said here* |  |  |  |  |  | vn snooze-40.4-1 «NP V»: agent=Agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
Electronic devices are damaged by prolonged operation

```conllu
# sent_id = question:adult-life:29-screens-diets-sofas-and-late-nights:e1:o3:1
# text = Electronic devices are damaged by prolonged operation
1	Electronic	electronic	ADJ	JJ	Degree=Pos	2	amod	_	_
2	devices	device	NOUN	NNS	Number=Plur	4	nsubj:pass	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	damaged	damage	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	by	by	ADP	IN	_	7	case	_	_
6	prolonged	prolong	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	amod	_	_
7	operation	operation	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **damage** | present · passive | prolonged operation | Electronic devices |  |  |  |  | vn destroy-44 «NP V NP»: agent=Agent subject=Patient |
| 2 | **prolong** | participle |  |  |  |  |  |  | vn sustain-55.6 «NP V NP PP.instrument»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
Children are incapable of operating such devices

```conllu
# sent_id = question:adult-life:29-screens-diets-sofas-and-late-nights:e1:o4:1
# text = Children are incapable of operating such devices
1	Children	child	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	incapable	incapable	ADJ	JJ	Degree=Pos	0	root	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	operating	operating	NOUN	NN	Number=Sing	7	compound	_	_
6	such	such	ADJ	JJ	Degree=Pos	7	amod	_	_
7	devices	device	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Children |  |  |  |  | of operating such devices; incapable *property* | tree rules |

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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.

<!-- /div -->

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- ← previous: [Screens, diets, sofas and late nights, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/adult-life/29-screens-diets-sofas-and-late-nights/t11/)
- next →: [Screens, diets, sofas and late nights, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/adult-life/29-screens-diets-sofas-and-late-nights/e2/)
- ↑ back to [Screens, diets, sofas and late nights](https://md.mova.elamur.ai/free/en/corpora/questions/adult-life/29-screens-diets-sofas-and-late-nights/)