---
title: Which of the following most accurately characterises the function of… — Special effects and stunts · tree and pragmatics
description: Which of the following most accurately characterises the function of a green screen? Exam question 2 of lesson 25 «Special effects and stunts» of the arts 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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# Exam question 2 · Special effects and stunts

<!-- .ven lang=en -->
Which of the following most accurately characterises the function of a green screen?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **What happens:** follow, characteris · **To what, where:** function

<!-- .vabout -->
This is exam question 2 of lesson 25 «Special effects and stunts» of the arts 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/arts/25-special-effects-and-stunts/#e2).

## The question {#question}

```conllu
# sent_id = question:arts:25-special-effects-and-stunts:e2:1
# text = Which of the following most accurately characterises the function of a green screen?
1	Which	which	PRON	WDT	PronType=Rel	7	nsubj	_	_
2	of	of	SCONJ	IN	_	7	mark	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	7	csubj	_	_
5	most	most	ADV	RBS	Degree=Sup	6	advmod	_	_
6	accurately	accurately	ADV	RB	_	7	advmod	_	_
7	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	function	function	NOUN	NN	Number=Sing	7	obj	_	_
10	of	of	ADP	IN	_	13	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	green	green	ADJ	JJ	Degree=Pos	13	amod	_	_
13	screen	screen	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
14	?	?	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | the function of a green screen |  |  |  | accurately *property* | tree rules |

<!-- .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 -->
A colour rendering performers taller upon screen

```conllu
# sent_id = question:arts:25-special-effects-and-stunts:e2:o1:1
# text = A colour rendering performers taller upon screen
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	colour	colour	NOUN	NN	Number=Sing	5	nsubj	_	_
3	rendering	render	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	performers	performer	NOUN	NNS	Number=Plur	3	obj	_	_
5	taller	tall	ADJ	JJR	Degree=Cmp	0	root	_	_
6	upon	upon	ADP	IN	_	7	case	_	_
7	screen	screen	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **render** | gerund | a colour *not said here* | performers |  |  |  |  | vn give-13.1 «NP V NP»: agent=Agent performer=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
A protective barrier preventing injury to actors

```conllu
# sent_id = question:arts:25-special-effects-and-stunts:e2:o2:1
# text = A protective barrier preventing injury to actors
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	protective	protective	ADJ	JJ	Degree=Pos	3	amod	_	_
3	barrier	barrier	NOUN	NN	Number=Sing	0	root	_	_
4	preventing	prevent	VERB	VBG	VerbForm=Ger	3	acl	_	_
5	injury	injury	NOUN	NN	Number=Sing	4	obj	_	_
6	to	to	ADP	IN	_	7	case	_	_
7	actors	actor	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **prevent** | gerund | a protective barrier *not said here* | injury |  |  |  | to actors | vn forbid-64.4-1 «NP V NP»: agent=Causer injury=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
A signal to the audience that a scene has ended

```conllu
# sent_id = question:arts:25-special-effects-and-stunts:e2:o3:1
# text = A signal to the audience that a scene has ended
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	signal	signal	NOUN	NN	Number=Sing	10	nsubj	_	_
3	to	to	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	audience	audience	NOUN	NN	Number=Sing	2	nmod	_	_
6	that	that	SCONJ	IN	_	8	mark	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	scene	scene	NOUN	NN	Number=Sing	5	appos	_	_
9	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	aux	_	_
10	ended	end	VERB	VBN	Tense=Past|VerbForm=Part	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **end** | present · perfect | a signal to the audience |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
A background subsequently replaced by computer with another setting

```conllu
# sent_id = question:arts:25-special-effects-and-stunts:e2:o4:1
# text = A background subsequently replaced by computer with another setting
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	background	background	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	subsequently	subsequently	ADV	RB	_	4	advmod	_	_
4	replaced	replace	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	by	by	ADP	IN	_	6	case	_	_
6	computer	computer	NOUN	NN	Number=Sing	4	obl	_	_
7	with	with	ADP	IN	_	9	case	_	_
8	another	another	DET	DT	PronType=Ind	9	det	_	_
9	setting	setting	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **replace** | participle · passive | computer | a background |  |  |  | with another setting; subsequently *property* | vn substitute-13.6.2-1 «NP V NP PP.co-theme»: agent=Theme subject=Location with setting=Co-Theme |

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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: [Special effects and stunts, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/arts/25-special-effects-and-stunts/e1/)
- next →: [Special effects and stunts, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/arts/25-special-effects-and-stunts/e3/)
- ↑ back to [Special effects and stunts](https://md.mova.elamur.ai/free/en/corpora/questions/arts/25-special-effects-and-stunts/)