---
title: Meganeura, a dragonfly cousin from 300 million years ago, had wings… — Terror birds, moas, giant insects and other lost… · tree and pragmatics
description: Meganeura, a dragonfly cousin from 300 million years ago, had wings about 70 centimetres across; more oxygen in the air then helped big insects breathe through their tubes. Who acts: Meganeura, more oxygen, big insects. A sentence of the lesson «Terror birds, moas, giant insects and other lost giant
---

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# Terror birds, moas, giant insects and other lost giants, sentence 9

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Meganeura, a dragonfly cousin from 300 million years ago, had wings about 70 centimetres across; more oxygen in the air then helped big insects breathe through their tubes.

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**Who acts:** Meganeura, more oxygen, big insects · **What happens:** have, help, breathe · **To what, where:** wings, tubes

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This is a sentence of the lesson «Terror birds, moas, giant insects and other lost giants» 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 (Meganeura, more oxygen, big insects), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:274-terror-birds-moas-giant-insects-and-lost-giants.lesson:9
# text = Meganeura, a dragonfly cousin from 300 million years ago, had wings about 70 centimetres across; more oxygen in the air then helped big insects breathe through their tubes.
# source = school lesson (ours)
# course = biology
# lesson = 274-terror-birds-moas-giant-insects-and-lost-giants.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): R5-strong ×1, R7-rel-agree ×1
1	Meganeura	Meganeura	PROPN	NNP	Number=Sing	12	nsubj	_	_
2	,	,	PUNCT	,	_	5	punct	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	dragonfly	dragonfly	NOUN	NN	Number=Sing	5	compound	_	_
5	cousin	cousin	NOUN	NN	Number=Sing	1	appos	_	_
6	from	from	ADP	IN	_	7	case	_	_
7	300	300	NUM	CD	NumForm=Digit|NumType=Card	8	compound	_	_
8	million	million	NUM	CD	NumForm=Word|NumType=Card	9	nummod	_	_
9	years	year	NOUN	NNS	Number=Plur	10	obl:unmarked	_	_
10	ago	ago	ADV	RB	_	5	advmod	_	_
11	,	,	PUNCT	,	_	1	punct	_	_
12	had	have	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
13	wings	wing	NOUN	NNS	Number=Plur	12	obj	_	_
14	about	about	ADV	RB	_	15	advmod	_	Agree=R5-strong|Haiku=16:advmod
15	70	70	NUM	CD	NumForm=Digit|NumType=Card	16	nummod	_	_
16	centimetres	centimetre	NOUN	NNS	Number=Plur	13	nmod:unmarked	_	_
17	across	across	ADV	RB	_	16	advmod	_	_
18	;	;	PUNCT	,	_	20	punct	_	_
19	more	more	ADJ	JJR	Degree=Cmp	20	amod	_	_
20	oxygen	oxygen	NOUN	NN	Number=Sing	25	nsubj	_	_
21	in	in	ADP	IN	_	23	case	_	_
22	the	the	DET	DT	Definite=Def|PronType=Art	23	det	_	_
23	air	air	NOUN	NN	Number=Sing	20	nmod	_	_
24	then	then	ADV	RB	PronType=Dem	25	advmod	_	_
25	helped	help	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	12	parataxis	_	_
26	big	big	ADJ	JJ	Degree=Pos	27	amod	_	_
27	insects	insect	NOUN	NNS	Number=Plur	28	nsubj	_	_
28	breathe	breathe	VERB	VB	VerbForm=Inf	25	xcomp	_	Agree=R7-rel-agree|Haiku=25:ccomp|HaikuPos=VERB:VBP:Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
29	through	through	ADP	IN	_	31	case	_	_
30	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	31	nmod:poss	_	_
31	tubes	tube	NOUN	NNS	Number=Plur	28	obl	_	_
32	.	.	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 | **have** | past | Meganeura | wings  70 centimetres |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent wing=Patient |
| 2 | **help** | past | more oxygen in the air |  |  |  | then |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent clause=Theme |
| 3 | **breathe** | infinitive | big insects |  |  | insects's tubes |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |

<!-- .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:274-terror-birds-moas-giant-insects-and-lost-giants.lesson:9`.

**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): R5-strong ×1, 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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