---
title: In Britain the only venomous snake is the adder, and bites are rare. — Defences: venom in snakes, jellyfish, scorpions… · tree and pragmatics
description: In Britain the only venomous snake is the adder, and bites are rare. Who acts: only venomous snake, bites. A sentence of the lesson «Defences: venom in snakes, jellyfish, scorpions and the platypus» of the biology course of Mova's primary school with its dependency tree and the pragmatics of every c
---

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# Defences: venom in snakes, jellyfish, scorpions and the platypus, sentence 18

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In Britain the only venomous snake is the adder, and bites are rare.

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**Who acts:** only venomous snake, bites · **What happens:** be · **To what, where:** adder, Britain

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This is a sentence of the lesson «Defences: venom in snakes, jellyfish, scorpions and the platypus» 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 (only venomous snake, bites), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus.lesson:18
# text = In Britain the only venomous snake is the adder, and bites are rare.
# source = school lesson (ours)
# course = biology
# lesson = 246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus.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	In	in	ADP	IN	_	2	case	_	_
2	Britain	Britain	PROPN	NNP	Number=Sing	9	obl	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
4	only	only	ADJ	JJ	Degree=Pos	6	amod	_	_
5	venomous	venomous	ADJ	JJ	Degree=Pos	6	amod	_	_
6	snake	snake	NOUN	NN	Number=Sing	9	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	adder	adder	NOUN	NN	Number=Sing	0	root	_	_
10	,	,	PUNCT	,	_	14	punct	_	_
11	and	and	CCONJ	CC	_	14	cc	_	_
12	bites	bite	NOUN	NNS	Number=Plur	14	nsubj	_	_
13	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	14	cop	_	_
14	rare	rare	ADJ	JJ	Degree=Pos	9	conj	_	_
15	.	.	PUNCT	.	_	9	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 | **is a** | present | the only venomous snake | the adder |  | Britain |  |  | tree rules |
| 2 | **is** | present | bites |  |  |  |  | rare *property* | 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:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus.lesson:18`.

**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: [Defences: venom in snakes, jellyfish,…, 16](https://md.mova.elamur.ai/free/en/corpora/school/biology/246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus/16/)
- next →: [Defences: poison, warning colours and…, 0](https://md.mova.elamur.ai/free/en/corpora/school/biology/247-defences-poison-warning-colours-and-mimics/0/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus/)