---
title: Nature makes glass too, when lightning strikes sand or lava cools ve… — Glass and pottery · tree and pragmatics
description: Nature makes glass too, when lightning strikes sand or lava cools very fast. Who acts: Nature, lightning. A sentence of the lesson «Glass and pottery» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Glass and pottery, sentence 4

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Nature makes glass too, when lightning strikes sand or lava cools very fast.

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**Who acts:** Nature, lightning · **What happens:** make, strike · **To what, where:** glass, sand

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This is a sentence of the lesson «Glass and pottery» of the chemistry course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Nature, lightning), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:030-glass-and-pottery.lesson:4
# text = Nature makes glass too, when lightning strikes sand or lava cools very fast.
# source = school lesson (ours)
# course = chemistry
# lesson = 030-glass-and-pottery.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1
1	Nature	nature	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	glass	glass	NOUN	NN	Number=Sing	2	obj	_	_
4	too	too	ADV	RB	_	2	advmod	_	Agree=R5-strong|Haiku=3:advmod
5	,	,	PUNCT	,	_	7	punct	_	_
6	when	when	ADV	WRB	PronType=Int	8	advmod	_	_
7	lightning	lightning	NOUN	NN	Number=Sing	8	nsubj	_	_
8	strikes	strike	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	advcl	_	_
9	sand	sand	NOUN	NN	Number=Sing	8	obj	_	_
10	or	or	CCONJ	CC	_	11	cc	_	_
11	lava	lava	NOUN	NN	Number=Sing	9	conj	_	_
12	cools	cool	NOUN	NNS	Number=Plur	8	conj	_	_
13	very	very	ADV	RB	_	14	advmod	_	_
14	fast	fast	ADV	RB	_	12	advmod	_	_
15	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Nature | glass |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset glass=Product |
| 2 | **strike** | present | lightning | sand or lava |  |  |  |  | vn hit-18.1-1 «NP V NP»: agent=Agent sand=Patient |

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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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:chemistry:030-glass-and-pottery.lesson:4`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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- ← previous: [Glass and pottery, 3](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/30-glass-and-pottery/3/)
- next →: [Glass and pottery, 5](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/30-glass-and-pottery/5/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/30-glass-and-pottery/)