---
title: Many birds, and also turtles and some fish, can sense the Earth's ma… — Compasses and the magnetic Earth · tree and pragmatics
description: Many birds, and also turtles and some fish, can sense the Earth's magnetic field and use it with the Sun and stars to find their way. Who acts: Many birds. 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 prag
---

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# Compasses and the magnetic Earth, sentence 12

<!-- .ven lang=en -->
Many birds, and also turtles and some fish, can sense the Earth's magnetic field and use it with the Sun and stars to find their way.

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**Who acts:** Many birds · **What happens:** sense, use, find · **To what, where:** magnetic field, field, way

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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 (Many birds), 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:12
# text = Many birds, and also turtles and some fish, can sense the Earth's magnetic field and use it with the Sun and stars to find their way.
# 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	Many	many	ADJ	JJ	Degree=Pos	2	amod	_	_
2	birds	bird	NOUN	NNS	Number=Plur	12	nsubj	_	_
3	,	,	PUNCT	,	_	6	punct	_	_
4	and	and	CCONJ	CC	_	6	cc	_	_
5	also	also	ADV	RB	_	6	advmod	_	_
6	turtles	turtle	NOUN	NNS	Number=Plur	2	conj	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	some	some	DET	DT	PronType=Ind	9	det	_	_
9	fish	fish	NOUN	NNS	Number=Plur	2	conj	_	_
10	,	,	PUNCT	,	_	2	punct	_	_
11	can	can	AUX	MD	VerbForm=Fin	12	aux	_	_
12	sense	sense	VERB	VB	VerbForm=Inf	0	root	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	Earth	Earth	PROPN	NNP	Number=Sing	17	nmod:poss	_	_
15	's	's	PART	POS	_	14	case	_	_
16	magnetic	magnetic	ADJ	JJ	Degree=Pos	17	amod	_	_
17	field	field	NOUN	NN	Number=Sing	12	obj	_	_
18	and	and	CCONJ	CC	_	19	cc	_	_
19	use	use	VERB	VB	VerbForm=Inf	12	conj	_	_
20	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	19	obj	_	_
21	with	with	ADP	IN	_	23	case	_	_
22	the	the	DET	DT	Definite=Def|PronType=Art	23	det	_	_
23	Sun	Sun	PROPN	NNP	Number=Sing	19	obl	_	_
24	and	and	CCONJ	CC	_	25	cc	_	_
25	stars	star	NOUN	NNS	Number=Plur	23	conj	_	_
26	to	to	PART	TO	_	27	mark	_	_
27	find	find	VERB	VB	VerbForm=Inf	19	advcl	_	_
28	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	29	nmod:poss	_	_
29	way	way	NOUN	NN	Number=Sing	27	obj	_	_
30	.	.	PUNCT	.	_	12	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **sense** | can | Many birds and turtles and some fish | the Earth's magnetic field |  |  |  |  | vn see-30.1-1 «NP V S»: agent=Experiencer field=Stimulus |
| 2 | **use** | infinitive | Many birds and turtles and some fish *not said here* | field |  |  |  | with the Sun and stars | vn eat-39.1 «NP V NP»: agent=Agent it=Patient |
| 3 | **find** | to-infinitive | Many birds and turtles and some fish *not said here* | birds's way |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent way=Topic |

<!-- .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:physics:030-compasses-and-the-magnetic-earth.lesson:12`.

**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: [Compasses and the magnetic Earth, 11](https://md.mova.elamur.ai/free/en/corpora/school/physics/30-compasses-and-the-magnetic-earth/11/)
- next →: [Compasses and the magnetic Earth, 13](https://md.mova.elamur.ai/free/en/corpora/school/physics/30-compasses-and-the-magnetic-earth/13/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/30-compasses-and-the-magnetic-earth/)