---
title: Snowy owls, Arctic foxes, stoats and skuas depend on lemmings; in go… — Myth check: do lemmings jump off cliffs? · tree and pragmatics
description: Snowy owls, Arctic foxes, stoats and skuas depend on lemmings; in good years they raise big families, and in bad years snowy owls may not nest at all. Who acts: Snowy owls, lemmings. A sentence of the lesson «Myth check: do lemmings jump off cliffs?» of the biology course of Mova's primary school wi
---

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# Myth check: do lemmings jump off cliffs?, sentence 10

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Snowy owls, Arctic foxes, stoats and skuas depend on lemmings; in good years they raise big families, and in bad years snowy owls may not nest at all.

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**Who acts:** Snowy owls, lemmings · **What happens:** depend, raise, not nest · **To what, where:** big families, all

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This is a sentence of the lesson «Myth check: do lemmings jump off cliffs?» 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 (Snowy owls, lemmings), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:150-myth-check-do-lemmings-jump-off-cliffs.lesson:10
# text = Snowy owls, Arctic foxes, stoats and skuas depend on lemmings; in good years they raise big families, and in bad years snowy owls may not nest at all.
# source = school lesson (ours)
# course = biology
# lesson = 150-myth-check-do-lemmings-jump-off-cliffs.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): R3-conj-first ×1, R5-strong ×1
1	Snowy	snowy	ADJ	JJ	Degree=Pos	2	amod	_	_
2	owls	owl	NOUN	NNS	Number=Plur	10	nsubj	_	_
3	,	,	PUNCT	,	_	5	punct	_	_
4	Arctic	arctic	ADJ	JJ	Degree=Pos	5	amod	_	_
5	foxes	fox	NOUN	NNS	Number=Plur	2	conj	_	_
6	,	,	PUNCT	,	_	7	punct	_	_
7	stoats	stoat	NOUN	NNS	Number=Plur	2	conj	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	skuas	skua	NOUN	NNS	Number=Plur	2	conj	_	Agree=R3-conj-first|Haiku=7:conj
10	depend	depend	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
11	on	on	ADP	IN	_	12	case	_	_
12	lemmings	lemming	NOUN	NNS	Number=Plur	10	obl	_	_
13	;	;	PUNCT	,	_	10	punct	_	_
14	in	in	ADP	IN	_	16	case	_	_
15	good	good	ADJ	JJ	Degree=Pos	16	amod	_	_
16	years	year	NOUN	NNS	Number=Plur	18	obl	_	_
17	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	18	nsubj	_	_
18	raise	raise	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	parataxis	_	_
19	big	big	ADJ	JJ	Degree=Pos	20	amod	_	_
20	families	family	NOUN	NNS	Number=Plur	18	obj	_	_
21	,	,	PUNCT	,	_	30	punct	_	_
22	and	and	CCONJ	CC	_	30	cc	_	_
23	in	in	ADP	IN	_	25	case	_	_
24	bad	bad	ADJ	JJ	Degree=Pos	25	amod	_	_
25	years	year	NOUN	NNS	Number=Plur	30	obl	_	_
26	snowy	snowy	ADJ	JJ	Degree=Pos	27	amod	_	_
27	owls	owl	NOUN	NNS	Number=Plur	30	nsubj	_	_
28	may	may	AUX	MD	VerbForm=Fin	30	aux	_	_
29	not	not	PART	RB	Polarity=Neg	30	advmod	_	_
30	nest	nest	VERB	VB	VerbForm=Inf	18	conj	_	Agree=R5-strong|Haiku=10:conj
31	at	at	ADP	IN	_	32	case	_	_
32	all	all	DET	DT	PronType=Tot	30	obl	_	_
33	.	.	PUNCT	.	_	10	punct	_	_
```

## Pragmatics {#pragmatics}

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- 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 | **depend** | present | Snowy owls and Arctic foxes and stoats and skuas |  |  |  |  | on lemmings | vn rely-70 «NP V PP.theme S\_ING»: agent=Agent on lemming=Theme |
| 2 | **raise** | present | lemmings *= lemming* | big families |  |  | year |  | vn put\_direction-9.4 «NP V NP»: agent=Agent family=Theme |
| 3 | **not** **nest** | may | snowy owls |  |  | all | year |  | vn berry-13.7 «NP V»: agent=Agent |

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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:biology:150-myth-check-do-lemmings-jump-off-cliffs.lesson:10`.

**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): R3-conj-first ×1, R5-strong ×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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- ← previous: [Myth check: do lemmings jump off cliffs?, 9](https://md.mova.elamur.ai/free/en/corpora/school/biology/150-myth-check-do-lemmings-jump-off-cliffs/9/)
- next →: [Myth check: do lemmings jump off cliffs?, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/150-myth-check-do-lemmings-jump-off-cliffs/11/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/150-myth-check-do-lemmings-jump-off-cliffs/)

