---
title: The Niger Delta Nembe Creek oil field was discovered in 1973 and pro… — Nigeria · tree and pragmatics
description: The Niger Delta Nembe Creek oil field was discovered in 1973 and produces from the middle Miocene deltaic sandstone-shale in an anticline structural trap at a depth of 2 to 4 km. Who acts: Miocene. A sentence of Wikipedia's «Nigeria» with its dependency tree and pragmatics.
---

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# Nigeria, sentence 430

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From Wikipedia, [«Nigeria»](https://en.wikipedia.org/wiki/Nigeria), 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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The Niger Delta Nembe Creek oil field was discovered in 1973 and produces from the middle Miocene deltaic sandstone-shale in an anticline structural trap at a depth of 2 to 4 km.

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**Who acts:** Miocene · **What happens:** discover, produce, shale · **To what, where:** Creek oil field, 1973, middle, anticline structural trap

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This is a sentence of the English Wikipedia article «Nigeria». The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Miocene), 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:Nigeria:430
# text = The Niger Delta Nembe Creek oil field was discovered in 1973 and produces from the middle Miocene deltaic sandstone-shale in an anticline structural trap at a depth of 2 to 4 km.
1	The	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
2	Niger	Niger	PROPN	NNP	Number=Sing	3	compound	_	_
3	Delta	Delta	PROPN	NNP	Number=Sing	4	compound	_	_
4	Nembe	Nembe	PROPN	NNP	Number=Sing	5	compound	_	_
5	Creek	Creek	PROPN	NNP	Number=Sing	7	compound	_	_
6	oil	oil	NOUN	NN	Number=Sing	7	compound	_	_
7	field	field	NOUN	NN	Number=Sing	9	nsubj:pass	_	_
8	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	aux:pass	_	_
9	discovered	discover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
10	in	in	ADP	IN	_	11	case	_	_
11	1973	1973	NUM	CD	NumForm=Digit|NumType=Card	9	obl	_	_
12	and	and	CCONJ	CC	_	13	cc	_	_
13	produces	produce	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	_
14	from	from	ADP	IN	_	16	case	_	_
15	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
16	middle	middle	NOUN	NN	Number=Sing	13	obl	_	_
17	Miocene	Miocene	PROPN	NNP	Number=Sing	21	nsubj	_	_
18	deltaic	deltaic	ADJ	JJ	Degree=Pos	21	amod	_	_
19	sandstone	sandstone	NOUN	NN	Number=Sing	21	compound	_	SpaceAfter=No
20	-	-	PUNCT	HYPH	_	19	punct	_	SpaceAfter=No
21	shale	shale	NOUN	NN	Number=Sing	16	acl:relcl	_	_
22	in	in	ADP	IN	_	26	case	_	_
23	an	a	DET	DT	Definite=Ind|PronType=Art	26	det	_	_
24	anticline	anticline	NOUN	NN	Number=Sing	26	compound	_	_
25	structural	structural	ADJ	JJ	Degree=Pos	26	amod	_	_
26	trap	trap	NOUN	NN	Number=Sing	21	nmod	_	_
27	at	at	ADP	IN	_	29	case	_	_
28	a	a	DET	DT	Definite=Ind|PronType=Art	29	det	_	_
29	depth	depth	NOUN	NN	Number=Sing	26	nmod	_	_
30	of	of	ADP	IN	_	34	case	_	_
31	2	2	NUM	CD	NumForm=Digit|NumType=Card	34	nummod	_	_
32	to	to	ADP	IN	_	33	case	_	_
33	4	4	NUM	CD	NumForm=Digit|NumType=Card	31	nmod	_	_
34	km	km	NOUN	NN	Number=Sing	29	nmod	_	SpaceAfter=No
35	.	.	PUNCT	.	_	9	punct	_	_
```

## Pragmatics {#pragmatics}

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **discover** | past · passive |  | the Creek oil field |  | 1973 |  |  | vn discover-84-1 «NP V NP»: subject=Topic |
| 2 | **produce** | present |  |  |  | the middle |  |  | vn create-26.4 «NP V NP PP.material»: agent=Agent from middle=Material |
| 3 | **shale** |  | Miocene | the middle *not said here* |  | a anticline structural trap at a depth of 2 km |  |  | 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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**Text:** the English Wikipedia, «Nigeria», 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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