---
title: Identify the principal reason for which devices on standby ought to… — Saving energy, pets at home and the ba… · tree and pragmatics
description: Identify the principal reason for which devices on standby ought to be switched off at the wall when not in use. Exam question 1 of lesson 118 «Saving energy, pets at home and the bathroom» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and o
---

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# Exam question 1 · Saving energy, pets at home and the bathroom

<!-- .ven lang=en -->
Identify the principal reason for which devices on standby ought to be switched off at the wall when not in use.

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** you · **What happens:** identify, switch off · **To what, where:** principal reason, devices, wall

<!-- .vabout -->
This is exam question 1 of lesson 118 «Saving energy, pets at home and the bathroom» of the everyday 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/everyday/118-energy-pets-and-bathroom/#e1).

## The question {#question}

```conllu
# sent_id = question:everyday:118-energy-pets-and-bathroom:e1:1
# text = Identify the principal reason for which devices on standby ought to be switched off at the wall when not in use.
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	13	obl	_	_
7	devices	device	NOUN	NNS	Number=Plur	13	nsubj:pass	_	_
8	on	on	ADP	IN	_	9	case	_	_
9	standby	standby	NOUN	NN	Number=Sing	7	nmod	_	_
10	ought	ought	AUX	MD	VerbForm=Fin	13	aux	_	_
11	to	to	PART	TO	_	13	mark	_	_
12	be	be	AUX	VB	VerbForm=Inf	13	aux:pass	_	_
13	switched	switch	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	_
14	off	off	ADP	RP	_	13	compound:prt	_	_
15	at	at	ADP	IN	_	17	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	wall	wall	NOUN	NN	Number=Sing	13	obl	_	_
18	when	when	SCONJ	WRB	_	21	mark	_	_
19	not	not	PART	RB	Polarity=Neg	21	advmod	_	_
20	in	in	ADP	IN	_	21	case	_	_
21	use	use	NOUN	NN	Number=Sing	13	advcl	_	SpaceAfter=No
22	.	.	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 | **switch off** | ought · passive | you *not said here* | devices on standby |  | the wall |  | for the principal reason | vn convert-26.6.2-1-1 «NP V NP»: subject=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 {#o1}

<!-- .ven lang=en -->
On standby they slowly charge the house

```conllu
# sent_id = question:everyday:118-energy-pets-and-bathroom:e1:o1:1
# text = On standby they slowly charge the house
1	On	on	ADP	IN	_	2	case	_	_
2	standby	standby	NOUN	NN	Number=Sing	5	obl	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
4	slowly	slowly	ADV	RB	_	5	advmod	_	_
5	charge	charge	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	house	house	NOUN	NN	Number=Sing	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **charge** | present | they | the house |  | standby |  | slowly *property* | vn run-51.3.2 «PP.location V NP»: agent=Initial\_Location house=Theme |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
On standby they still use electricity

```conllu
# sent_id = question:everyday:118-energy-pets-and-bathroom:e1:o2:1
# text = On standby they still use electricity
1	On	on	ADP	IN	_	2	case	_	_
2	standby	standby	NOUN	NN	Number=Sing	5	obl	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
4	still	still	ADV	RB	_	5	advmod	_	_
5	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	electricity	electricity	NOUN	NN	Number=Sing	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **use** | present | they | electricity |  | standby | still |  | vn eat-39.1 «NP V NP»: agent=Agent electricity=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
On standby they may record conversations

```conllu
# sent_id = question:everyday:118-energy-pets-and-bathroom:e1:o3:1
# text = On standby they may record conversations
1	On	on	ADP	IN	_	2	case	_	_
2	standby	standby	NOUN	NN	Number=Sing	5	obl	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
4	may	may	AUX	MD	VerbForm=Fin	5	aux	_	_
5	record	record	VERB	VB	VerbForm=Inf	0	root	_	_
6	conversations	conversation	NOUN	NNS	Number=Plur	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **record** | may | they | conversations |  | standby |  |  | vn scribble-25.2-1 «NP V NP PP.destination»: agent=Agent conversation=Theme on standby=Destination |

### Option 4 {#o4}

<!-- .ven lang=en -->
On standby they make the picture brighter

```conllu
# sent_id = question:everyday:118-energy-pets-and-bathroom:e1:o4:1
# text = On standby they make the picture brighter
1	On	on	ADP	IN	_	2	case	_	_
2	standby	standby	NOUN	NN	Number=Sing	4	obl	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
4	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	picture	picture	NOUN	NN	Number=Sing	4	obj	_	_
7	brighter	bright	ADJ	JJR	Degree=Cmp	4	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | they | the picture |  | standby |  | bright *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset picture=Product |

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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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