---
title: A tour guide says «surfers ride the river here». How can that be? — The Amazon river: pink dolphins, flood… · tree and pragmatics
description: A tour guide says «surfers ride the river here». How can that be? Test 8 of lesson 155 «The Amazon river: pink dolphins, flooded forest, giant fish and piranhas» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice 
---

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# Test 8 · The Amazon river: pink dolphins, flooded forest, giant fis…

<!-- .ven lang=en -->
A tour guide says «surfers ride the river here». How can that be?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** tour guide, surfers, that · **What happens:** say, ride, be · **To what, where:** river · **Speech:** someone speaks here

<!-- .vabout -->
This is test 8 of lesson 155 «The Amazon river: pink dolphins, flooded forest, giant fish and piranhas» of the biology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/155-the-amazon-river/#t8).

## The question {#question}

<!-- .note -->
*Sentence 1:* A tour guide says «surfers ride the river here».

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:1
# text = A tour guide says «surfers ride the river here».
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	tour	tour	NOUN	NN	Number=Sing	3	compound	_	_
3	guide	guide	NOUN	NN	Number=Sing	4	nsubj	_	_
4	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	«	«	PUNCT	``	_	7	punct	_	SpaceAfter=No
6	surfers	surfer	NOUN	NNS	Number=Plur	7	nsubj	_	_
7	ride	ride	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	ccomp	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	river	river	NOUN	NN	Number=Sing	7	obj	_	_
10	here	here	ADV	RB	PronType=Dem	7	advmod	_	SpaceAfter=No
11	»	»	PUNCT	''	_	7	punct	_	SpaceAfter=No
12	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | a tour guide |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **ride** *in a quote* | present | surfers | the river |  | here |  |  | vn nonvehicle-51.4.2 «NP V NP»: agent=Agent river=Theme |

<!-- .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.

<!-- .note -->
*Sentence 2:* How can that be?

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:2
# text = How can that be?
1	How	how	ADV	WRB	PronType=Int	4	advmod	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
3	that	that	PRON	WDT	PronType=Rel	4	nsubj	_	_
4	be	be	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **can** | can | that |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The river flows uphill at night

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:o1:1
# text = The river flows uphill at night
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	river	river	NOUN	NN	Number=Sing	3	nsubj	_	_
3	flows	flow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	uphill	uphill	ADV	RB	_	3	advmod	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	night	night	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **flow** | present | the river |  |  |  | night | uphill *property* | vn appear-48.1.1 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Boats make the waves

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:o2:1
# text = Boats make the waves
1	Boats	boat	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	waves	wave	NOUN	NNS	Number=Plur	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Boats | the waves |  |  |  |  | vn build-26.1-1 «NP.material V NP»: agent=Material wave=Product |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is a joke, because rivers never have any waves

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:o3:1
# text = It is a joke, because rivers never have any waves
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	joke	joke	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
5	,	,	PUNCT	,	_	9	punct	_	_
6	because	because	SCONJ	IN	_	9	mark	_	_
7	rivers	river	NOUN	NNS	Number=Plur	9	nsubj	_	_
8	never	never	ADV	RB	PronType=Neg	9	advmod	_	_
9	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
10	any	any	DET	DT	PronType=Ind	11	det	_	_
11	waves	wave	NOUN	NNS	Number=Plur	9	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | a joke |  |  |  |  | tree rules |
| 2 | **not** **have** | present | rivers | any waves |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent wave=Patient |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
The pororoca tidal wave rolls up the river from the sea

```conllu
# sent_id = question:biology:155-the-amazon-river:t8:o4:1
# text = The pororoca tidal wave rolls up the river from the sea
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	pororoca	pororoca	NOUN	NN	Number=Sing	5	nsubj	_	_
3	tidal	tidal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	wave	wave	NOUN	NN	Number=Sing	2	conj	_	_
5	rolls	roll	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	up	up	ADP	RP	_	5	compound:prt	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	river	river	NOUN	NN	Number=Sing	5	obj	_	_
9	from	from	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	sea	sea	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **roll up** | present | the pororoca and tidal wave | the river |  | the sea |  |  | vn run-51.3.2-2 «NP V NP PP.trajectory»: agent=Agent river=Theme from sea=Trajectory |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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