---
title: Polar bears need the sea ice: they wait on it for seals to come up t… — The polar zone: polar bears · tree and pragmatics
description: Polar bears need the sea ice: they wait on it for seals to come up to breathe, and as the climate warms the ice melts earlier and freezes later, so the bears must go longer without food. Who acts: Polar bears, seals, climate, ice. A sentence of the lesson «The polar zone: polar bears» of the biology
---

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# The polar zone: polar bears, sentence 2

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Polar bears need the sea ice: they wait on it for seals to come up to breathe, and as the climate warms the ice melts earlier and freezes later, so the bears must go longer without food.

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**Who acts:** Polar bears, seals, climate, ice, bears · **What happens:** need, wait, come up, breathe, warm, melt · **To what, where:** sea ice, bear

<!-- .vabout -->
This is a sentence of the lesson «The polar zone: polar bears» of the biology 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 (Polar bears, seals, climate, ice), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:105-the-polar-zone-polar-bears.lesson:2
# text = Polar bears need the sea ice: they wait on it for seals to come up to breathe, and as the climate warms the ice melts earlier and freezes later, so the bears must go longer without food.
# source = school lesson (ours)
# course = biology
# lesson = 105-the-polar-zone-polar-bears.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, R7-rel-agree ×1
1	Polar	polar	ADJ	JJ	Degree=Pos	2	amod	_	_
2	bears	bear	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	sea	sea	NOUN	NN	Number=Sing	6	compound	_	_
6	ice	ice	NOUN	NN	Number=Sing	3	obj	_	_
7	:	:	PUNCT	:	_	9	punct	_	_
8	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	9	nsubj	_	_
9	wait	wait	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	_
10	on	on	ADP	IN	_	11	case	_	_
11	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	obl	_	_
12	for	for	ADP	IN	_	13	case	_	_
13	seals	seal	NOUN	NNS	Number=Plur	9	obl	_	_
14	to	to	PART	TO	_	15	mark	_	_
15	come	come	VERB	VB	VerbForm=Inf	9	advcl	_	_
16	up	up	ADP	RP	_	15	compound:prt	_	_
17	to	to	PART	TO	_	18	mark	_	_
18	breathe	breathe	VERB	VB	VerbForm=Inf	15	advcl	_	_
19	,	,	PUNCT	,	_	24	punct	_	_
20	and	and	CCONJ	CC	_	24	cc	_	_
21	as	as	SCONJ	IN	_	24	mark	_	Agree=R5-strong|Haiku=23:case|HaikuPos=ADP:IN:_
22	the	the	DET	DT	Definite=Def|PronType=Art	23	det	_	_
23	climate	climate	NOUN	NN	Number=Sing	24	nsubj	_	Agree=R7-rel-agree|Haiku=24:obl
24	warms	warm	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	_
25	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
26	ice	ice	NOUN	NN	Number=Sing	27	nsubj	_	_
27	melts	melt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	conj	_	_
28	earlier	early	ADV	RBR	Degree=Cmp	27	advmod	_	_
29	and	and	CCONJ	CC	_	30	cc	_	_
30	freezes	freeze	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	27	conj	_	_
31	later	late	ADV	RBR	Degree=Cmp	30	advmod	_	_
32	,	,	PUNCT	,	_	37	punct	_	_
33	so	so	ADV	RB	_	37	advmod	_	_
34	the	the	DET	DT	Definite=Def|PronType=Art	35	det	_	_
35	bears	bear	NOUN	NNS	Number=Plur	37	nsubj	_	_
36	must	must	AUX	MD	VerbForm=Fin	37	aux	_	_
37	go	go	VERB	VB	VerbForm=Inf	9	advcl	_	_
38	longer	long	ADV	RBR	Degree=Cmp	37	advmod	_	_
39	without	without	ADP	IN	_	40	case	_	_
40	food	food	NOUN	NN	Number=Sing	37	obl	_	_
41	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | Polar bears | the sea ice |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot ice=Theme |
| 2 | **wait** | present | seals *= seal* |  |  | bear |  | for seals | vn exist-47.1 «NP V PP.location»: agent=Theme on it=Location |
| 3 | **come up** | to-infinitive | seals *= seal* *not said here* |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |
| 4 | **breathe** | to-infinitive | seals *= seal* *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 5 | **warm** | present | the climate |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 6 | **melt** | present | the ice |  |  |  |  | early *property* | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 7 | **freeze** | present | the ice *not said here* |  |  |  |  | late *property* | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 8 | **go** | must | the bears |  |  |  |  | without food; long *property* | vn disappearance-48.2-1 «NP V»: agent=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:biology:105-the-polar-zone-polar-bears.lesson:2`.

**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, R7-rel-agree ×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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