---
title: Identify the principal reason for which electrical conductors are cu… — Metals and what they're good for · tree and pragmatics
description: Identify the principal reason for which electrical conductors are customarily fabricated from copper. Exam question 1 of lesson 31 «Metals and what they're good for» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's c
---

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# Exam question 1 · Metals and what they're good for

<!-- .ven lang=en -->
Identify the principal reason for which electrical conductors are customarily fabricated from copper.

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** you · **What happens:** identify, fabricate · **To what, where:** principal reason, electrical conductors, copper

<!-- .vabout -->
This is exam question 1 of lesson 31 «Metals and what they're good for» of the chemistry 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/chemistry/31-metals-what-theyre-good-for/#e1).

## The question {#question}

```conllu
# sent_id = question:chemistry:31-metals-what-theyre-good-for:e1:1
# text = Identify the principal reason for which electrical conductors are customarily fabricated from copper.
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	11	obl	_	_
7	electrical	electrical	ADJ	JJ	Degree=Pos	8	amod	_	_
8	conductors	conductor	NOUN	NNS	Number=Plur	11	nsubj:pass	_	_
9	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	_	_
10	customarily	customarily	ADV	RB	_	11	advmod	_	_
11	fabricated	fabricate	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	_
12	from	from	ADP	IN	_	13	case	_	_
13	copper	copper	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
14	.	.	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 | **fabricate** | present · passive |  | electrical conductors |  | copper |  | for the principal reason; customarily *property* | vn create-26.4 «NP V NP PP.material»: subject=Result from copper=Material |

<!-- .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 -->
Copper is the most abundant metal in rocks

```conllu
# sent_id = question:chemistry:31-metals-what-theyre-good-for:e1:o1:1
# text = Copper is the most abundant metal in rocks
1	Copper	copper	NOUN	NN	Number=Sing	6	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
4	most	most	ADV	RBS	Degree=Sup	5	advmod	_	_
5	abundant	abundant	ADJ	JJ	Degree=Pos	6	amod	_	_
6	metal	metal	NOUN	NN	Number=Sing	0	root	_	_
7	in	in	ADP	IN	_	8	case	_	_
8	rocks	rock	NOUN	NNS	Number=Plur	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Copper | the abundant metal |  | rocks |  |  | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Copper is the least dense of all metals

```conllu
# sent_id = question:chemistry:31-metals-what-theyre-good-for:e1:o2:1
# text = Copper is the least dense of all metals
1	Copper	copper	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	least	least	ADV	RBS	Degree=Sup	5	advmod	_	_
5	dense	dense	ADJ	JJ	Degree=Pos	0	root	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	all	all	DET	DT	PronType=Tot	8	det	_	_
8	metals	metal	NOUN	NNS	Number=Plur	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Copper |  |  |  |  | of all metals; dense, least *property* | tree rules |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Copper is an excellent conductor of electricity

```conllu
# sent_id = question:chemistry:31-metals-what-theyre-good-for:e1:o3:1
# text = Copper is an excellent conductor of electricity
1	Copper	copper	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	an	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	excellent	excellent	ADJ	JJ	Degree=Pos	5	amod	_	_
5	conductor	conductor	NOUN	NN	Number=Sing	0	root	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	electricity	electricity	NOUN	NN	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Copper | a excellent conductor |  |  |  | of electricity | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Copper is attracted strongly by magnets

```conllu
# sent_id = question:chemistry:31-metals-what-theyre-good-for:e1:o4:1
# text = Copper is attracted strongly by magnets
1	Copper	copper	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	attracted	attract	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	strongly	strongly	ADV	RB	_	3	advmod	_	_
5	by	by	ADP	IN	_	6	case	_	_
6	magnets	magnet	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **attract** | present · passive | magnets | Copper |  |  |  | strongly *property* | vn lure-59.3 «NP V NP»: agent=Agent subject=Patient |

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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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