---
title: On average, an earthquake of magnitude 7.0 or higher occurs once eve… — Iran · tree and pragmatics
description: On average, an earthquake of magnitude 7.0 or higher occurs once every ten years. A sentence of Wikipedia's «Iran» with its dependency tree and pragmatics.
---

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# Iran, sentence 247

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From Wikipedia, [«Iran»](https://en.wikipedia.org/wiki/Iran), revision of the 2026-09-01 dump, [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). The trees and pragmatics of these pages, Mova's parse of that text, are CC BY-SA 4.0 too.

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On average, an earthquake of magnitude 7.0 or higher occurs once every ten years.

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**What happens:** occur · **To what, where:** average

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This is a sentence of the English Wikipedia article «Iran». The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: what happens, when and where, as Mova's frames read it from the tree.

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**Mova's own parse.** This tree may be wrong. The article's note marks are left out of the parse.

## The tree {#tree}

```conllu
# sent_id = wikipedia:Iran:247
# text = On average, an earthquake of magnitude 7.0 or higher occurs once every ten years.
1	On	on	ADP	IN	_	2	case	_	_
2	average	average	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
3	,	,	PUNCT	,	_	5	punct	_	_
4	an	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	earthquake	earthquake	NOUN	NN	Number=Sing	2	conj	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	magnitude	magnitude	NOUN	NN	Number=Sing	5	nmod	_	_
8	7.0	7.0	NUM	CD	NumForm=Digit|NumType=Frac	7	flat	_	_
9	or	or	CCONJ	CC	_	10	cc	_	_
10	higher	high	ADJ	JJR	Degree=Cmp	7	conj	_	_
11	occurs	occur	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
12	once	once	ADV	RB	NumForm=Word|NumType=Mult	11	advmod	_	_
13	every	every	DET	DT	PronType=Tot	15	det	_	_
14	ten	ten	NUM	CD	NumForm=Word|NumType=Card	15	nummod	_	_
15	years	year	NOUN	NNS	Number=Plur	11	obl:unmarked	_	SpaceAfter=No
16	.	.	PUNCT	.	_	11	punct	_	_
```

## Pragmatics {#pragmatics}

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **occur** | present |  |  |  | average and a earthquake of magnitude | year | once *property* | vn occur-48.3-1 «NP V PP»: agent=Theme on average=Location |

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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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**Text:** the English Wikipedia, «Iran», revision of the 2026-09-01 dump, CC BY-SA 4.0. **Tree:** Mova's own parse, CC BY-SA 4.0 as the text is. **Frames:** Mova's frames reader (`prag`), the article read in order, CC BY-SA 4.0.

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