---
title: Identify the duration of the night upon which British clocks are put… — The date line and summer time: clocks… · tree and pragmatics
description: Identify the duration of the night upon which British clocks are put back by one hour in October. Exam question 3 of lesson 121 «The date line and summer time: clocks going forward and back» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of 
---

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# Exam question 3 · The date line and summer time: clocks going forward and back

<!-- .ven lang=en -->
Identify the duration of the night upon which British clocks are put back by one hour in October.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** identify, put back · **To what, where:** duration, British clocks

<!-- .vabout -->
This is exam question 3 of lesson 121 «The date line and summer time: clocks going forward and back» of the world 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/world/121-date-line-and-summer-time/#e3).

## The question {#question}

```conllu
# sent_id = question:world:121-date-line-and-summer-time:e3:1
# text = Identify the duration of the night upon which British clocks are put back by one hour in October.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	duration	duration	NOUN	NN	Number=Sing	1	obj	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	night	night	NOUN	NN	Number=Sing	3	nmod	_	_
7	upon	upon	ADP	IN	_	8	case	_	_
8	which	which	PRON	WDT	PronType=Rel	12	obl	_	_
9	British	British	ADJ	JJ	Degree=Pos	10	amod	_	_
10	clocks	clock	NOUN	NNS	Number=Plur	12	nsubj:pass	_	_
11	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	12	aux:pass	_	_
12	put	put	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	acl	_	_
13	back	back	ADV	RB	_	12	advmod	_	_
14	by	by	ADP	IN	_	16	case	_	_
15	one	one	NUM	CD	NumForm=Word|NumType=Card	16	nummod	_	_
16	hour	hour	NOUN	NN	Number=Sing	12	obl	_	_
17	in	in	ADP	IN	_	18	case	_	_
18	October	October	PROPN	NNP	Number=Sing	12	obl	_	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 duration of the night |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent duration=Theme |
| 2 | **put back** | present · passive |  | British clocks |  | the duration of the night | hour; october |  | vn put-9.1-2 «NP V PP.destination NP»: subject=Theme upon which=Destination |

<!-- .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 -->
Twenty-six hours

```conllu
# sent_id = question:world:121-date-line-and-summer-time:e3:o1:1
# text = Twenty-six hours
1	Twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	1	punct	_	SpaceAfter=No
3	six	six	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	hours	hour	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
Twenty-three hours

```conllu
# sent_id = question:world:121-date-line-and-summer-time:e3:o2:1
# text = Twenty-three hours
1	Twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	1	punct	_	SpaceAfter=No
3	three	three	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	hours	hour	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Twenty-five hours

```conllu
# sent_id = question:world:121-date-line-and-summer-time:e3:o3:1
# text = Twenty-five hours
1	Twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	1	punct	_	SpaceAfter=No
3	five	five	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	hours	hour	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
Twenty-four hours

```conllu
# sent_id = question:world:121-date-line-and-summer-time:e3:o4:1
# text = Twenty-four hours
1	Twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	SpaceAfter=No
2	-	-	PUNCT	:	_	3	punct	_	SpaceAfter=No
3	four	four	NUM	CD	NumForm=Word|NumType=Card	1	conj	_	_
4	hours	hour	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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: [The date line and summer time: clocks…, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/world/121-date-line-and-summer-time/e2/)
- next →: [The date line and summer time: clocks…, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/world/121-date-line-and-summer-time/e4/)
- ↑ back to [The date line and summer time: clocks going forward and back](https://md.mova.elamur.ai/free/en/corpora/questions/world/121-date-line-and-summer-time/)