---
title: A cobra spreads its hood by stretching long ribs in its neck as a wa… — Defences: venom in snakes, jellyfish, scorpions… · tree and pragmatics
description: A cobra spreads its hood by stretching long ribs in its neck as a warning, and some cobras spit venom at an attacker's eyes from about two metres away. Who acts: cobra, hood, cobras. A sentence of the lesson «Defences: venom in snakes, jellyfish, scorpions and the platypus» of the biology course of 
---

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# Defences: venom in snakes, jellyfish, scorpions and the platypus, sentence 8

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A cobra spreads its hood by stretching long ribs in its neck as a warning, and some cobras spit venom at an attacker's eyes from about two metres away.

<!-- .vintro -->
**Who acts:** cobra, hood, cobras · **What happens:** spread, stretch, spit · **To what, where:** hood, long ribs, venom, eyes

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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 (cobra, hood, cobras), 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:8
# text = A cobra spreads its hood by stretching long ribs in its neck as a warning, and some cobras spit venom at an attacker's eyes from about two metres away.
# 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): R2-punct-next ×1, R5-strong ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	cobra	cobra	NOUN	NN	Number=Sing	3	nsubj	_	_
3	spreads	spread	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	hood	hood	NOUN	NN	Number=Sing	3	obj	_	_
6	by	by	SCONJ	IN	_	7	mark	_	_
7	stretching	stretch	VERB	VBG	VerbForm=Ger	5	acl	_	_
8	long	long	ADJ	JJ	Degree=Pos	9	amod	_	_
9	ribs	rib	NOUN	NNS	Number=Plur	7	obj	_	_
10	in	in	ADP	IN	_	12	case	_	_
11	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	12	nmod:poss	_	_
12	neck	neck	NOUN	NN	Number=Sing	9	nmod	_	_
13	as	as	ADP	IN	_	15	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	warning	warning	NOUN	NN	Number=Sing	7	obl	_	_
16	,	,	PUNCT	,	_	20	punct	_	Agree=R2-punct-next|Haiku=3:punct
17	and	and	CCONJ	CC	_	20	cc	_	_
18	some	some	DET	DT	PronType=Ind	19	det	_	_
19	cobras	cobra	NOUN	NNS	Number=Plur	20	nsubj	_	_
20	spit	spit	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
21	venom	venom	NOUN	NN	Number=Sing	20	obj	_	_
22	at	at	ADP	IN	_	26	case	_	_
23	an	a	DET	DT	Definite=Ind|PronType=Art	24	det	_	_
24	attacker	attacker	NOUN	NN	Number=Sing	26	nmod:poss	_	_
25	's	's	PART	POS	_	24	case	_	_
26	eyes	eye	NOUN	NNS	Number=Plur	20	obl	_	_
27	from	from	ADP	IN	_	30	case	_	_
28	about	about	ADV	RB	_	29	advmod	_	_
29	two	two	NUM	CD	NumForm=Word|NumType=Card	30	nummod	_	_
30	metres	metre	NOUN	NNS	Number=Plur	31	obl	_	Agree=R5-strong|Haiku=20:obl
31	away	away	ADV	RB	_	3	advmod	_	_
32	.	.	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 | **spread** | present | a cobra | cobra's hood |  |  |  | away *property* | vn appear-48.1.1 «PP.location V NP»: agent=Location hood=Theme |
| 2 | **stretch** | gerund | cobra's hood *not said here* | long ribs |  |  |  | as a warning; in cobra's neck | vn crane-40.3.2 «NP V NP PP.recipient PP.theme»: agent=Agent rib=Patient in neck=Topic |
| 3 | **spit** | present | some cobras | venom |  | a attacker's eyes |  |  | vn breathe-40.1.2 «NP V NP.theme»: agent=Agent venom=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:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus.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): R2-punct-next ×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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