---
title: The Earth's magnetism is made by hot, liquid iron swirling in its ou… — Compasses and the magnetic Earth · tree and pragmatics
description: The Earth's magnetism is made by hot, liquid iron swirling in its outer core. Who acts: hot liquid iron. A sentence of the lesson «Compasses and the magnetic Earth» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Compasses and the magnetic Earth, sentence 9

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The Earth's magnetism is made by hot, liquid iron swirling in its outer core.

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**Who acts:** hot liquid iron · **What happens:** make, swirl · **To what, where:** magnetism, outer core

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This is a sentence of the lesson «Compasses and the magnetic Earth» of the physics 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 (hot liquid iron), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:030-compasses-and-the-magnetic-earth.lesson:9
# text = The Earth's magnetism is made by hot, liquid iron swirling in its outer core.
# source = school lesson (ours)
# course = physics
# lesson = 030-compasses-and-the-magnetic-earth.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	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Earth	Earth	PROPN	NNP	Number=Sing	4	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	magnetism	magnetism	NOUN	NN	Number=Sing	6	nsubj:pass	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	aux:pass	_	_
6	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
7	by	by	ADP	IN	_	11	case	_	_
8	hot	hot	ADJ	JJ	Degree=Pos	11	amod	_	_
9	,	,	PUNCT	,	_	8	punct	_	_
10	liquid	liquid	ADJ	JJ	Degree=Pos	11	amod	_	_
11	iron	iron	NOUN	NN	Number=Sing	6	obl	_	_
12	swirling	swirl	VERB	VBG	VerbForm=Ger	11	acl	_	_
13	in	in	ADP	IN	_	16	case	_	_
14	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	16	nmod:poss	_	_
15	outer	outer	ADJ	JJ	Degree=Pos	16	amod	_	_
16	core	core	NOUN	NN	Number=Sing	12	obl	_	_
17	.	.	PUNCT	.	_	6	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 · passive | hot liquid iron | the Earth's magnetism |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset subject=Product |
| 2 | **swirl** | gerund | hot liquid iron *not said here* |  |  | magnetism's outer core |  |  | vn modes\_of\_being\_with\_motion-47.3 «NP V PP.location»: agent=Theme in core=Location |

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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:physics:030-compasses-and-the-magnetic-earth.lesson:9`.

**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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