---
title: Identify the process by which energy is generated within the core of… — The Sun, our star · tree and pragmatics
description: Identify the process by which energy is generated within the core of the Sun. Exam question 1 of lesson 1 «The Sun, our star» of the space course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Exam question 1 · The Sun, our star

<!-- .ven lang=en -->
Identify the process by which energy is generated within the core of the Sun.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you, energy · **What happens:** identify, generate · **To what, where:** process

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This is exam question 1 of lesson 1 «The Sun, our star» of the space 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/space/1-the-sun-our-star/#e1).

## The question {#question}

```conllu
# sent_id = question:space:1-the-sun-our-star:e1:1
# text = Identify the process by which energy is generated within the core of the Sun.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	process	process	NOUN	NN	Number=Sing	1	obj	_	_
4	by	by	ADP	IN	_	6	case	_	_
5	which	which	DET	WDT	PronType=Int	6	det	_	_
6	energy	energy	NOUN	NN	Number=Sing	8	obl	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	aux:pass	_	_
8	generated	generate	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	1	parataxis	_	_
9	within	within	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	core	core	NOUN	NN	Number=Sing	1	obl	_	_
12	of	of	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	Sun.	Sunday	PROPN	NNP	Number=Sing	11	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the process |  |  |  | within the core of the Sun. | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent process=Theme |
| 2 | **generate** | present · passive | which energy |  |  |  |  |  | vn grow-26.2.1 «NP.patient V PP.product»: agent=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 -->
Reflection of light received from other stars

```conllu
# sent_id = question:space:1-the-sun-our-star:e1:o1:1
# text = Reflection of light received from other stars
1	Reflection	reflection	NOUN	NN	Number=Sing	4	nsubj	_	_
2	of	of	ADP	IN	_	3	case	_	_
3	light	light	NOUN	NN	Number=Sing	1	nmod	_	_
4	received	receive	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	other	other	ADJ	JJ	Degree=Pos	7	amod	_	_
7	stars	star	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **receive** | participle | Reflection of light |  |  | other stars |  |  | vn obtain-13.5.2 «NP V NP PP.source»: agent=Agent from star=Source |

### Option 2 {#o2}

<!-- .ven lang=en -->
Combustion of gases in the presence of oxygen

```conllu
# sent_id = question:space:1-the-sun-our-star:e1:o2:1
# text = Combustion of gases in the presence of oxygen
1	Combustion	combustion	NOUN	NN	Number=Sing	0	root	_	_
2	of	of	ADP	IN	_	3	case	_	_
3	gases	gas	NOUN	NNS	Number=Plur	1	nmod	_	_
4	in	in	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	presence	presence	NOUN	NN	Number=Sing	3	nmod	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	oxygen	oxygen	NOUN	NN	Number=Sing	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **combust** |  | gases in the presence of oxygen |  |  |  |  |  | nom combustion «process intransitive»: of=agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
Gravitational friction between the planets

```conllu
# sent_id = question:space:1-the-sun-our-star:e1:o3:1
# text = Gravitational friction between the planets
1	Gravitational	Gravitational	PROPN	NNP	Number=Sing	2	compound	_	_
2	friction	friction	NOUN	NN	Number=Sing	0	root	_	_
3	between	between	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	planets	planet	NOUN	NNS	Number=Plur	2	nmod	_	_
```

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

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Nuclear fusion of hydrogen into helium

```conllu
# sent_id = question:space:1-the-sun-our-star:e1:o4:1
# text = Nuclear fusion of hydrogen into helium
1	Nuclear	nuclear	ADJ	JJ	Degree=Pos	2	amod	_	_
2	fusion	fusion	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	hydrogen	hydrogen	NOUN	NN	Number=Sing	2	nmod	_	_
5	into	into	ADP	IN	_	6	case	_	_
6	helium	helium	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fuse** |  | hydrogen |  |  | helium |  |  | nom fusion «event intransitive»: of=agent into=place |

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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 Sun, our star, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/space/1-the-sun-our-star/t11/)
- next →: [The Sun, our star, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/space/1-the-sun-our-star/e2/)
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