---
title: Millions of years ago, when the air held more oxygen, some dragonfly… — The insect house: ants, stick insects, tarantula… · tree and pragmatics
description: Millions of years ago, when the air held more oxygen, some dragonfly relatives had wings about 70 centimetres across. Who acts: air, dragonfly relatives. A sentence of the lesson «The insect house: ants, stick insects, tarantulas and scorpions» of the biology course of Mova's primary school with its
---

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# The insect house: ants, stick insects, tarantulas and scorpions, sentence 15

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Millions of years ago, when the air held more oxygen, some dragonfly relatives had wings about 70 centimetres across.

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**Who acts:** air, dragonfly relatives · **What happens:** hold, have · **To what, where:** more oxygen, Millions

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This is a sentence of the lesson «The insect house: ants, stick insects, tarantulas and scorpions» 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 (air, dragonfly relatives), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.lesson:15
# text = Millions of years ago, when the air held more oxygen, some dragonfly relatives had wings about 70 centimetres across.
# source = school lesson (ours)
# course = biology
# lesson = 097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.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 ×2
1	Millions	million	NOUN	NNS	Number=Plur	16	obl:unmarked	_	_
2	of	of	ADP	IN	_	3	case	_	_
3	years	year	NOUN	NNS	Number=Plur	1	nmod	_	_
4	ago	ago	ADV	RB	_	16	advmod	_	Agree=R5-strong|Haiku=1:advmod
5	,	,	PUNCT	,	_	9	punct	_	_
6	when	when	ADV	WRB	PronType=Int	9	advmod	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	air	air	NOUN	NN	Number=Sing	9	nsubj	_	_
9	held	hold	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	16	advcl	_	_
10	more	more	ADJ	JJR	Degree=Cmp	11	amod	_	_
11	oxygen	oxygen	NOUN	NN	Number=Sing	9	obj	_	_
12	,	,	PUNCT	,	_	4	punct	_	_
13	some	some	DET	DT	PronType=Ind	15	det	_	_
14	dragonfly	dragonfly	NOUN	NN	Number=Sing	15	compound	_	_
15	relatives	relative	NOUN	NNS	Number=Plur	16	nsubj	_	_
16	had	have	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
17	wings	wing	NOUN	NNS	Number=Plur	16	obj	_	_
18	about	about	ADV	RB	_	19	advmod	_	Agree=R5-strong|Haiku=20:advmod
19	70	70	NUM	CD	NumForm=Digit|NumType=Card	20	nummod	_	_
20	centimetres	centimetre	NOUN	NNS	Number=Plur	17	nmod:unmarked	_	_
21	across	across	ADV	RB	_	20	advmod	_	_
22	.	.	PUNCT	.	_	16	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | past | the air | more oxygen |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent oxygen=Theme |
| 2 | **have** | past | some dragonfly relatives | Millions of years |  |  |  | ago *property* | vn birth-28.2-1 «NP V NP»: agent=Agent wing=Patient |

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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:097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.lesson:15`.

**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 ×2. **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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