---
title: Steel is iron with a little carbon mixed in, which makes it much str… — Metals and what they're good for · tree and pragmatics
description: Steel is iron with a little carbon mixed in, which makes it much stronger; steel bridges need painting and regular checks for rust. Who acts: Steel, little carbon, steel bridges. A sentence of the lesson «Metals and what they're good for» of the chemistry course of Mova's primary school with its dep
---

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# Metals and what they're good for, sentence 10

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Steel is iron with a little carbon mixed in, which makes it much stronger; steel bridges need painting and regular checks for rust.

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**Who acts:** Steel, little carbon, steel bridges · **What happens:** be, mix in, make, need · **To what, where:** iron, little carbon, steel, painting

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This is a sentence of the lesson «Metals and what they're good for» 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 (Steel, little carbon, steel bridges), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:031-metals-what-theyre-good-for.lesson:10
# text = Steel is iron with a little carbon mixed in, which makes it much stronger; steel bridges need painting and regular checks for rust.
# source = school lesson (ours)
# course = chemistry
# lesson = 031-metals-what-theyre-good-for.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): R1-cc-next ×1
1	Steel	steel	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	iron	iron	NOUN	NN	Number=Sing	0	root	_	_
4	with	with	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	little	little	ADJ	JJ	Degree=Pos	7	amod	_	_
7	carbon	carbon	NOUN	NN	Number=Sing	3	nmod	_	_
8	mixed	mix	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	acl	_	_
9	in	in	ADP	RP	_	8	compound:prt	_	_
10	,	,	PUNCT	,	_	12	punct	_	_
11	which	which	PRON	WDT	PronType=Rel	12	nsubj	_	_
12	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	acl:relcl	_	_
13	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	obj	_	_
14	much	much	ADV	RB	_	15	advmod	_	_
15	stronger	strong	ADJ	JJR	Degree=Cmp	12	xcomp	_	_
16	;	;	PUNCT	,	_	19	punct	_	_
17	steel	steel	NOUN	NN	Number=Sing	18	compound	_	_
18	bridges	bridge	NOUN	NNS	Number=Plur	19	nsubj	_	_
19	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	_
20	painting	painting	NOUN	NN	Number=Sing	19	obj	_	_
21	and	and	CCONJ	CC	_	23	cc	_	Agree=R1-cc-next|Haiku=20:cc
22	regular	regular	ADJ	JJ	Degree=Pos	23	amod	_	_
23	checks	check	NOUN	NNS	Number=Plur	20	conj	_	_
24	for	for	ADP	IN	_	25	case	_	_
25	rust	rust	NOUN	NN	Number=Sing	23	nmod	_	_
26	.	.	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 a** | present | Steel | iron |  |  |  | with a little carbon | tree rules |
| 2 | **mix in** | participle |  | a little carbon *not said here* |  |  |  |  | vn mix-22.1-1-1 «NP V»: agent=Patient |
| 3 | **make** | present | a little carbon | steel |  |  |  | strong *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset it=Product |
| 4 | **need** | present | steel bridges | painting and regular checks for rust |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot painting=Theme |

<!-- .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.

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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:031-metals-what-theyre-good-for.lesson:10`.

**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): R1-cc-next ×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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