---
title: A diver sees the sea turn pink with tiny floating bundles one night… — Coral reef builders: polyps, bleaching… · tree and pragmatics
description: A diver sees the sea turn pink with tiny floating bundles one night after a full moon. What is happening? Test 8 · ★ of lesson 172 «Coral reef builders: polyps, bleaching, sand from parrotfish and giant clams» of the biology course of Mova's primary school, with the dependency tree and pragmatics of
---

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# Test 8 · ★ · Coral reef builders: polyps, bleaching, sand from parrotfi…

<!-- .ven lang=en -->
A diver sees the sea turn pink with tiny floating bundles one night after a full moon. What is happening?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** diver, sea · **What happens:** see, turn, float, happen · **To what, where:** sea

<!-- .vabout -->
This is test 8 · ★ of lesson 172 «Coral reef builders: polyps, bleaching, sand from parrotfish and giant clams» 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/172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams/#t8).

## The question {#question}

<!-- .note -->
*Sentence 1:* A diver sees the sea turn pink with tiny floating bundles one night after a full moon.

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:1
# text = A diver sees the sea turn pink with tiny floating bundles one night after a full moon.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	diver	diver	NOUN	NN	Number=Sing	3	nsubj	_	_
3	sees	see	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	sea	sea	NOUN	NN	Number=Sing	3	obj	_	_
6	turn	turn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	xcomp	_	_
7	pink	pink	ADJ	JJ	Degree=Pos	6	xcomp	_	_
8	with	with	ADP	IN	_	11	case	_	_
9	tiny	tiny	ADJ	JJ	Degree=Pos	11	amod	_	_
10	floating	float	VERB	VBG	VerbForm=Ger	11	amod	_	_
11	bundles	bundle	NOUN	NNS	Number=Plur	6	obl	_	_
12	one	one	NUM	CD	NumForm=Word|NumType=Card	13	nummod	_	_
13	night	night	NOUN	NN	Number=Sing	6	obl:unmarked	_	_
14	after	after	ADP	IN	_	17	case	_	_
15	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
16	full	full	ADJ	JJ	Degree=Pos	17	amod	_	_
17	moon	moon	NOUN	NN	Number=Sing	6	obl	_	SpaceAfter=No
18	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | present | a diver | the sea |  |  |  |  | tree rules |
| 2 | **turn** | present | the sea *not said here* |  |  |  | after a full moon; night | with tiny floating bundles; pink *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 3 | **float** | gerund |  |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=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:* What is happening?

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:2
# text = What is happening?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	happening	happen	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present · progressive |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The corals are spawning all at once

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:o1:1
# text = The corals are spawning all at once
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	corals	coral	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
4	spawning	spawn	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
5	all	all	ADV	RB	_	4	advmod	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	once	once	ADV	RB	NumForm=Word|NumType=Mult	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **spawn** | present · progressive | the corals |  |  |  |  | all *property* | vn calve-28.1-1 «NP V»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
The reef is bleaching

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:o2:1
# text = The reef is bleaching
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	reef	reef	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
4	bleaching	bleach	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bleach** | present · progressive | the reef |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
Fish are laying their eggs all over the sand

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:o3:1
# text = Fish are laying their eggs all over the sand
1	Fish	fish	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	laying	lay	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	eggs	egg	NOUN	NNS	Number=Plur	3	obj	_	_
6	all	all	ADV	RB	_	9	advmod	_	_
7	over	over	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	sand	sand	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lay** | present · progressive | Fish | Fish's eggs |  | the sand |  |  | vn put\_spatial-9.2 «NP V NP PP.destination»: agent=Agent egg=Theme over sand=Destination |

### Option 4 {#o4}

<!-- .ven lang=en -->
A ship spilled paint

```conllu
# sent_id = question:biology:172-coral-reef-builders-polyps-bleaching-sand-from-parrotfish-and-giant-clams:t8:o4:1
# text = A ship spilled paint
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	ship	ship	NOUN	NN	Number=Sing	0	root	_	_
3	spilled	spill	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	acl	_	_
4	paint	paint	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **spill** | participle | a ship *not said here* | paint |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location paint=Theme |

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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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