---
title: Rust is flaky and falls away, so fresh iron underneath is uncovered… — Rust: iron's slow fire · tree and pragmatics
description: Rust is flaky and falls away, so fresh iron underneath is uncovered and rusts next. Who acts: Rust. A sentence of the lesson «Rust: iron's slow fire» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Rust: iron's slow fire, sentence 6

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Rust is flaky and falls away, so fresh iron underneath is uncovered and rusts next.

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**Who acts:** Rust · **What happens:** be, fall away, uncover, rust · **To what, where:** fresh iron

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This is a sentence of the lesson «Rust: iron's slow fire» 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 (Rust), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:013-rust-irons-slow-fire.lesson:6
# text = Rust is flaky and falls away, so fresh iron underneath is uncovered and rusts next.
# source = school lesson (ours)
# course = chemistry
# lesson = 013-rust-irons-slow-fire.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): no change
1	Rust	rust	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	flaky	flaky	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	falls	fall	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
6	away	away	ADV	RB	_	5	advmod	_	_
7	,	,	PUNCT	,	_	13	punct	_	_
8	so	so	ADV	RB	_	13	advmod	_	_
9	fresh	fresh	ADJ	JJ	Degree=Pos	10	amod	_	_
10	iron	iron	NOUN	NN	Number=Sing	13	nsubj:pass	_	_
11	underneath	underneath	ADV	RB	_	10	advmod	_	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	aux:pass	_	_
13	uncovered	uncover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	parataxis	_	_
14	and	and	CCONJ	CC	_	15	cc	_	_
15	rusts	rust	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	conj	_	_
16	next	next	ADV	RB	_	15	advmod	_	_
17	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Rust |  |  |  |  | flaky *property* | tree rules |
| 2 | **fall away** | present | Rust *not said here* |  |  |  |  | away *property* | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute |
| 3 | **uncover** | present · passive |  | fresh iron |  |  |  |  | tree rules |
| 4 | **rust** | present |  |  |  |  |  | next *property* | vn entity\_specific\_cos-45.5 «NP.patient V»: agent=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:013-rust-irons-slow-fire.lesson:6`.

**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): no change. **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: [Rust: iron's slow fire, 5](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/13-rust-irons-slow-fire/5/)
- next →: [Rust: iron's slow fire, 7](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/13-rust-irons-slow-fire/7/)
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