---
title: The pororoca is a tidal wave that pushes up the mouth of the Amazon… — The Amazon river: pink dolphins, flooded forest,… · tree and pragmatics
description: The pororoca is a tidal wave that pushes up the mouth of the Amazon when a strong high tide meets the river, and surfers have ridden it for over thirty minutes. Who acts: pororoca, tidal wave, strong high tide, surfers. A sentence of the lesson «The Amazon river: pink dolphins, flooded forest, giant
---

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# The Amazon river: pink dolphins, flooded forest, giant fish and piranhas, sentence 10

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The pororoca is a tidal wave that pushes up the mouth of the Amazon when a strong high tide meets the river, and surfers have ridden it for over thirty minutes.

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**Who acts:** pororoca, tidal wave, strong high tide, surfers · **What happens:** be, push up, meet, ride · **To what, where:** tidal wave, mouth, river

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This is a sentence of the lesson «The Amazon river: pink dolphins, flooded forest, giant fish and piranhas» 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 (pororoca, tidal wave, strong high tide, surfers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:155-the-amazon-river.lesson:10
# text = The pororoca is a tidal wave that pushes up the mouth of the Amazon when a strong high tide meets the river, and surfers have ridden it for over thirty minutes.
# source = school lesson (ours)
# course = biology
# lesson = 155-the-amazon-river.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): R8-pos-agree ×1
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	pororoca	pororoca	NOUN	NN	Number=Sing	6	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	tidal	tidal	ADJ	JJ	Degree=Pos	6	amod	_	_
6	wave	wave	NOUN	NN	Number=Sing	0	root	_	_
7	that	that	PRON	WDT	PronType=Rel	8	nsubj	_	_
8	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	acl:relcl	_	_
9	up	up	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	mouth	mouth	NOUN	NN	Number=Sing	8	obl	_	_
12	of	of	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	Amazon	Amazon	PROPN	NNP	Number=Sing	11	nmod	_	Agree=R8-pos-agree|Haiku=11:nmod|HaikuPos=NOUN:NN:Number=Sing
15	when	when	ADV	WRB	PronType=Int	20	advmod	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
17	strong	strong	ADJ	JJ	Degree=Pos	19	amod	_	_
18	high	high	ADJ	JJ	Degree=Pos	19	amod	_	_
19	tide	tide	NOUN	NN	Number=Sing	20	nsubj	_	_
20	meets	meet	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	advcl	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	river	river	NOUN	NN	Number=Sing	20	obj	_	_
23	,	,	PUNCT	,	_	27	punct	_	_
24	and	and	CCONJ	CC	_	27	cc	_	_
25	surfers	surfer	NOUN	NNS	Number=Plur	27	nsubj	_	_
26	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	27	aux	_	_
27	ridden	ride	VERB	VBN	Tense=Past|VerbForm=Part	6	conj	_	_
28	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	27	obj	_	_
29	for	for	ADP	IN	_	32	case	_	_
30	over	over	ADV	RB	_	31	advmod	_	_
31	thirty	thirty	NUM	CD	NumForm=Word|NumType=Card	32	nummod	_	_
32	minutes	minute	NOUN	NNS	Number=Plur	27	obl	_	_
33	.	.	PUNCT	.	_	6	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 | **is a** | present | the pororoca | a tidal wave |  |  |  |  | tree rules |
| 2 | **push up** | present | a tidal wave | the mouth of the Amazon |  |  |  |  | vn carry-11.4-1-1 «NP V NP»: agent=Agent mouth=Theme |
| 3 | **meet** | present | a strong high tide | the river |  |  |  |  | vn meet-36.3-1 «NP V NP»: agent=Agent river=Co-Agent |
| 4 | **ride** | present · perfect | surfers | river |  |  | minute |  | vn nonvehicle-51.4.2 «NP V NP.location»: agent=Agent it=Location |

<!-- .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:155-the-amazon-river.lesson:10`.

**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): R8-pos-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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