---
title: The polar lands are cold because sunlight reaches them at a low slan… — Glaciers, ice ages and polar lands · tree and pragmatics
description: The polar lands are cold because sunlight reaches them at a low slant, and white ice reflects most of it back. Who acts: polar lands, sunlight, white ice. A sentence of the lesson «Glaciers, ice ages and polar lands» of the world course of Mova's primary school with its dependency tree and the pragm
---

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# Glaciers, ice ages and polar lands, sentence 6

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The polar lands are cold because sunlight reaches them at a low slant, and white ice reflects most of it back.

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**Who acts:** polar lands, sunlight, white ice · **What happens:** be, reach, reflect · **To what, where:** Canada, low slant, most

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This is a sentence of the lesson «Glaciers, ice ages and polar lands» of the world 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 lands, sunlight, white ice), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:065-glaciers-ice-ages-polar-lands.lesson:6
# text = The polar lands are cold because sunlight reaches them at a low slant, and white ice reflects most of it back.
# source = school lesson (ours)
# course = world
# lesson = 065-glaciers-ice-ages-polar-lands.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
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	polar	polar	ADJ	JJ	Degree=Pos	3	amod	_	_
3	lands	land	NOUN	NNS	Number=Plur	5	nsubj	_	_
4	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
5	cold	cold	ADJ	JJ	Degree=Pos	0	root	_	_
6	because	because	SCONJ	IN	_	8	mark	_	_
7	sunlight	sunlight	NOUN	NN	Number=Sing	8	nsubj	_	_
8	reaches	reach	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
9	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	8	obj	_	_
10	at	at	ADP	IN	_	13	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	low	low	ADJ	JJ	Degree=Pos	13	amod	_	_
13	slant	slant	NOUN	NN	Number=Sing	8	obl	_	_
14	,	,	PUNCT	,	_	18	punct	_	_
15	and	and	CCONJ	CC	_	18	cc	_	_
16	white	white	ADJ	JJ	Degree=Pos	17	amod	_	_
17	ice	ice	NOUN	NN	Number=Sing	18	nsubj	_	_
18	reflects	reflect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
19	most	most	ADJ	JJS	Degree=Sup	18	obj	_	Agree=R7-rel-agree|Haiku=18:nsubj
20	of	of	ADP	IN	_	21	case	_	_
21	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	19	nmod	_	_
22	back	back	ADV	RB	_	18	advmod	_	_
23	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: changed polarity=none

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the polar lands |  |  |  |  | cold *property* | tree rules |
| 2 | **reach** | present | sunlight | Canada |  | a low slant |  |  | vn get-13.5.1 «NP V NP PP.source NP.asset»: agent=Agent they=Theme at slant=Asset |
| 3 | **reflect** | present | white ice | most of land |  |  |  |  | tree rules |

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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:world:065-glaciers-ice-ages-polar-lands.lesson:6`.

**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. **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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