---
title: Which is natural glass? — Glass and pottery · tree and pragmatics
description: Which is natural glass? Test 9 · ★★ of lesson 30 «Glass and pottery» of the chemistry 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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# Test 9 · ★★ · Glass and pottery

<!-- .ven lang=en -->
Which is natural glass?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **What happens:** be · **To what, where:** natural glass

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This is test 9 · ★★ of lesson 30 «Glass and pottery» of the chemistry course of Mova's primary school. 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/30-glass-and-pottery/#t9).

## The question {#question}

```conllu
# sent_id = question:chemistry:30-glass-and-pottery:t9:1
# text = Which is natural glass?
1	Which	which	PRON	WDT	PronType=Rel	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	natural	natural	ADJ	JJ	Degree=Pos	4	amod	_	_
4	glass	glass	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present |  | natural glass |  |  |  |  | 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 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
A pottery plate

```conllu
# sent_id = question:chemistry:30-glass-and-pottery:t9:o1:1
# text = A pottery plate
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	pottery	pottery	NOUN	NN	Number=Sing	3	compound	_	_
3	plate	plate	NOUN	NN	Number=Sing	0	root	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
A clay brick

```conllu
# sent_id = question:chemistry:30-glass-and-pottery:t9:o2:1
# text = A clay brick
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	clay	clay	NOUN	NN	Number=Sing	3	compound	_	_
3	brick	brick	NOUN	NN	Number=Sing	0	root	_	_
```

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

### Option 3 {#o3}

<!-- .ven lang=en -->
A phone screen

```conllu
# sent_id = question:chemistry:30-glass-and-pottery:t9:o3:1
# text = A phone screen
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	phone	phone	NOUN	NN	Number=Sing	3	compound	_	_
3	screen	screen	NOUN	NN	Number=Sing	0	root	_	_
```

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

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

<!-- .ven lang=en -->
Obsidian from a volcano

```conllu
# sent_id = question:chemistry:30-glass-and-pottery:t9:o4:1
# text = Obsidian from a volcano
1	Obsidian	Obsidian	PROPN	NNP	Number=Sing	0	root	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	volcano	volcano	NOUN	NN	Number=Sing	1	nmod	_	_
```

<!-- .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.

<!-- /div -->

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- ← previous: [Glass and pottery, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/30-glass-and-pottery/t8/)
- next →: [Glass and pottery, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/30-glass-and-pottery/t10/)
- ↑ back to [Glass and pottery](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/30-glass-and-pottery/)