---
title: The ice sheet covering Antarctica is on average about 2 km thick and… — The Arctic and Antarctica · tree and pragmatics
description: The ice sheet covering Antarctica is on average about 2 km thick and holds roughly 70 percent of the world's fresh water. Who acts: ice sheet. A sentence of the lesson «The Arctic and Antarctica» of the geography course of Mova's primary school with its dependency tree and the pragmatics of every cl
---

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# The Arctic and Antarctica, sentence 8

<!-- .ven lang=en -->
The ice sheet covering Antarctica is on average about 2 km thick and holds roughly 70 percent of the world's fresh water.

<!-- .vintro -->
**Who acts:** ice sheet · **What happens:** cover, be, hold · **To what, where:** Antarctica, average, 70 percent

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This is a sentence of the lesson «The Arctic and Antarctica» of the geography 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 (ice sheet), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:015-the-arctic-and-antarctica.lesson:8
# text = The ice sheet covering Antarctica is on average about 2 km thick and holds roughly 70 percent of the world's fresh water.
# source = school lesson (ours)
# course = geography
# lesson = 015-the-arctic-and-antarctica.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): R7-rel-agree ×1, R8-pos-agree ×1
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	ice	ice	NOUN	NN	Number=Sing	3	compound	_	_
3	sheet	sheet	NOUN	NN	Number=Sing	12	nsubj	_	_
4	covering	cover	VERB	VBG	VerbForm=Ger	3	acl	_	_
5	Antarctica	Antarctica	PROPN	NNP	Number=Sing	4	obj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
7	on	on	ADP	IN	_	8	case	_	_
8	average	average	NOUN	NN	Number=Sing	12	obl	_	_
9	about	about	ADV	RB	_	10	advmod	_	Agree=R7-rel-agree|Haiku=10:case|HaikuPos=ADP:IN:_
10	2	2	NUM	CD	NumForm=Digit|NumType=Card	11	nummod	_	_
11	km	km	NOUN	NNS	Number=Plur	12	obl:unmarked	_	Agree=R8-pos-agree|Haiku=12:obl:unmarked|HaikuPos=NOUN:NN:Number=Sing
12	thick	thick	ADJ	JJ	Degree=Pos	0	root	_	_
13	and	and	CCONJ	CC	_	14	cc	_	_
14	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	conj	_	_
15	roughly	roughly	ADV	RB	_	16	advmod	_	_
16	70	70	NUM	CD	NumForm=Digit|NumType=Card	17	nummod	_	_
17	percent	percent	NOUN	NN	Number=Sing	14	obj	_	_
18	of	of	ADP	IN	_	23	case	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	world	world	NOUN	NN	Number=Sing	23	nmod:poss	_	_
21	's	's	PART	POS	_	20	case	_	_
22	fresh	fresh	ADJ	JJ	Degree=Pos	23	amod	_	_
23	water	water	NOUN	NN	Number=Sing	17	nmod	_	_
24	.	.	PUNCT	.	_	12	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 | **cover** | gerund | the ice sheet *not said here* |  | Antarctica |  |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme antarctica=Destination |
| 2 | **is** | present | the ice sheet |  |  | average |  | 2 km *obl:unmarked*; thick *property* | tree rules |
| 3 | **hold** | present | the ice sheet *not said here* | 70 percent of the world's fresh water |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent percent=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:geography:015-the-arctic-and-antarctica.lesson:8`.

**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): R7-rel-agree ×1, R8-pos-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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