---
title: In 2020 scientists found that platypus fur glows blue-green under ul… — The platypus and the echidna: mammals that lay e… · tree and pragmatics
description: In 2020 scientists found that platypus fur glows blue-green under ultraviolet light; nobody yet knows whether the glow is useful to the animal. Who acts: scientists, platypus fur, nobody, glow. A sentence of the lesson «The platypus and the echidna: mammals that lay eggs» of the biology course of Mo
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/43-platypus-and-echidna/9/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [The platypus and the echidna: mammals…](https://md.mova.elamur.ai/free/en/corpora/school/biology/43-platypus-and-echidna/) / 9

# The platypus and the echidna: mammals that lay eggs, sentence 9

<!-- .ven lang=en -->
In 2020 scientists found that platypus fur glows blue-green under ultraviolet light; nobody yet knows whether the glow is useful to the animal.

<!-- .vintro -->
**Who acts:** scientists, platypus fur, nobody, glow · **What happens:** find, glow, know, be · **To what, where:** 2020, ultraviolet light · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «The platypus and the echidna: mammals that lay eggs» 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 (scientists, platypus fur, nobody, glow), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:043-platypus-and-echidna.lesson:9
# text = In 2020 scientists found that platypus fur glows blue-green under ultraviolet light; nobody yet knows whether the glow is useful to the animal.
# source = school lesson (ours)
# course = biology
# lesson = 043-platypus-and-echidna.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): R5-strong ×1, R7-rel-agree ×1
1	In	in	ADP	IN	_	3	case	_	_
2	2020	2020	NUM	CD	NumForm=Digit|NumType=Card	4	obl	_	Agree=R5-strong|Haiku=3:nummod
3	scientists	scientist	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	found	find	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
5	that	that	SCONJ	IN	_	8	mark	_	_
6	platypus	platypus	NOUN	NN	Number=Sing	7	compound	_	_
7	fur	fur	NOUN	NN	Number=Sing	8	nsubj	_	_
8	glows	glow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	ccomp	_	_
9	blue	blue	ADJ	JJ	Degree=Pos	11	amod	_	_
10	-	-	PUNCT	HYPH	_	9	punct	_	_
11	green	green	ADJ	JJ	Degree=Pos	8	xcomp	_	_
12	under	under	ADP	IN	_	14	case	_	_
13	ultraviolet	ultraviolet	ADJ	JJ	Degree=Pos	14	amod	_	Agree=R7-rel-agree|Haiku=14:compound|HaikuPos=NOUN:NN:Number=Sing
14	light	light	NOUN	NN	Number=Sing	8	obl	_	_
15	;	;	PUNCT	,	_	18	punct	_	_
16	nobody	nobody	PRON	NN	Number=Sing|PronType=Neg	18	nsubj	_	_
17	yet	yet	ADV	RB	_	18	advmod	_	_
18	knows	know	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	conj	_	_
19	whether	whether	SCONJ	IN	_	23	mark	_	_
20	the	the	DET	DT	Definite=Def|PronType=Art	21	det	_	_
21	glow	glow	NOUN	NN	Number=Sing	23	nsubj	_	_
22	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	23	cop	_	_
23	useful	useful	ADJ	JJ	Degree=Pos	18	ccomp	_	_
24	to	to	ADP	IN	_	26	case	_	_
25	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
26	animal	animal	NOUN	NN	Number=Sing	23	obl	_	_
27	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: narrate
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **find** | past | scientists | 2020 |  |  |  |  | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent clause=Theme |
| 2 | **glow** | present | platypus fur |  |  | ultraviolet light |  | green *property* | vn light\_emission-43.1 «NP V PP.location»: agent=Theme under light=Location |
| 3 | **know** | present | nobody |  |  |  | yet |  | vn comprehend-87.2-1-1-1 «NP V»: agent=Experiencer |
| 4 | **is** | present | the glow |  |  |  |  | to the animal; useful *property* | tree rules |

<!-- .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.

<!-- div src -->

**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:043-platypus-and-echidna.lesson:9`.

**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): R5-strong ×1, R7-rel-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/).

<!-- /div -->

<!-- pn -->
- ← previous: [The platypus and the echidna: mammals…, 8](https://md.mova.elamur.ai/free/en/corpora/school/biology/43-platypus-and-echidna/8/)
- next →: [The platypus and the echidna: mammals…, 10](https://md.mova.elamur.ai/free/en/corpora/school/biology/43-platypus-and-echidna/10/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/43-platypus-and-echidna/)