---
title: Goldfish colour depends partly on light, so a goldfish kept in the d… — Goldfish and pond fish: the three-second memory… · tree and pragmatics
description: Goldfish colour depends partly on light, so a goldfish kept in the dark can turn pale, and wild fish also change colour to match their surroundings. Who acts: Goldfish colour, goldfish, wild fish. A sentence of the lesson «Goldfish and pond fish: the three-second memory myth» of the biology course o
---

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# Goldfish and pond fish: the three-second memory myth, sentence 14

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Goldfish colour depends partly on light, so a goldfish kept in the dark can turn pale, and wild fish also change colour to match their surroundings.

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**Who acts:** Goldfish colour, goldfish, wild fish · **What happens:** depend, keep, turn, change, match · **To what, where:** goldfish, dark, colour, surroundings

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This is a sentence of the lesson «Goldfish and pond fish: the three-second memory myth» 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 (Goldfish colour, goldfish, wild fish), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:204-goldfish-and-pond-fish-the-three-second-memory-myth.lesson:14
# text = Goldfish colour depends partly on light, so a goldfish kept in the dark can turn pale, and wild fish also change colour to match their surroundings.
# source = school lesson (ours)
# course = biology
# lesson = 204-goldfish-and-pond-fish-the-three-second-memory-myth.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): no change
1	Goldfish	goldfish	NOUN	NN	Number=Sing	2	compound	_	_
2	colour	colour	NOUN	NN	Number=Sing	3	nsubj	_	_
3	depends	depend	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	partly	partly	ADV	RB	_	3	advmod	_	_
5	on	on	ADP	IN	_	6	case	_	_
6	light	light	NOUN	NN	Number=Sing	3	obl	_	_
7	,	,	PUNCT	,	_	16	punct	_	_
8	so	so	ADV	RB	_	16	advmod	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	goldfish	goldfish	NOUN	NN	Number=Sing	16	nsubj	_	_
11	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
12	in	in	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	dark	dark	NOUN	NN	Number=Sing	11	obl	_	_
15	can	can	AUX	MD	VerbForm=Fin	16	aux	_	_
16	turn	turn	VERB	VB	VerbForm=Inf	3	advcl	_	_
17	pale	pale	ADJ	JJ	Degree=Pos	16	xcomp	_	_
18	,	,	PUNCT	,	_	23	punct	_	_
19	and	and	CCONJ	CC	_	23	cc	_	_
20	wild	wild	ADJ	JJ	Degree=Pos	21	amod	_	_
21	fish	fish	NOUN	NNS	Number=Plur	23	nsubj	_	_
22	also	also	ADV	RB	_	23	advmod	_	_
23	change	change	VERB	VB	VerbForm=Inf	3	parataxis	_	_
24	colour	colour	NOUN	NN	Number=Sing	23	obj	_	_
25	to	to	PART	TO	_	26	mark	_	_
26	match	match	VERB	VB	VerbForm=Inf	23	advcl	_	_
27	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	28	nmod:poss	_	_
28	surroundings	surroundings	NOUN	NNS	Number=Ptan	26	obj	_	_
29	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **depend** | present | Goldfish colour |  |  |  |  | on light; partly *property* | vn rely-70 «NP V PP.theme S\_ING»: agent=Agent on light=Theme |
| 2 | **keep** | participle |  | a goldfish *not said here* |  | the dark |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent in dark=Location |
| 3 | **turn** | can | a goldfish |  |  |  |  | pale *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 4 | **change** | infinitive | wild fish | colour |  |  |  |  | vn dress-41.1.1-1-1 «NP V NP»: agent=Agent colour=Patient |
| 5 | **match** | to-infinitive | wild fish *not said here* | change's surroundings |  |  |  |  | vn amalgamate-22.2-1 «NP V NP»: agent=Agent surroundings=Patient |

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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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**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:204-goldfish-and-pond-fish-the-three-second-memory-myth.lesson:14`.

**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): no change. **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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- next →: [Goldfish and pond fish: the three-seco…, 15](https://md.mova.elamur.ai/free/en/corpora/school/biology/204-goldfish-and-pond-fish-the-three-second-memory-myth/15/)
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