---
title: Scorpions glow blue-green under ultraviolet light because of a chemi… — The insect house: ants, stick insects, tarantula… · tree and pragmatics
description: Scorpions glow blue-green under ultraviolet light because of a chemical in their outer shell; scientists are not sure why, and they find scorpions at night with UV torches. Who acts: Scorpions, scientists. A sentence of the lesson «The insect house: ants, stick insects, tarantulas and scorpions» of 
---

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# The insect house: ants, stick insects, tarantulas and scorpions, sentence 9

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Scorpions glow blue-green under ultraviolet light because of a chemical in their outer shell; scientists are not sure why, and they find scorpions at night with UV torches.

<!-- .vintro -->
**Who acts:** Scorpions, scientists · **What happens:** glow, not be, find · **To what, where:** blue green, ultraviolet light, scorpions

<!-- .vabout -->
This is a sentence of the lesson «The insect house: ants, stick insects, tarantulas and scorpions» 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 (Scorpions, scientists), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.lesson:9
# text = Scorpions glow blue-green under ultraviolet light because of a chemical in their outer shell; scientists are not sure why, and they find scorpions at night with UV torches.
# source = school lesson (ours)
# course = biology
# lesson = 097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.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 ×2
1	Scorpions	scorpion	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	glow	glow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	blue	blue	ADJ	JJ	Degree=Pos	5	amod	_	_
4	-	-	PUNCT	HYPH	_	3	punct	_	_
5	green	green	NOUN	NN	Number=Sing	2	obj	_	_
6	under	under	ADP	IN	_	8	case	_	_
7	ultraviolet	ultraviolet	ADJ	JJ	Degree=Pos	8	amod	_	Agree=R7-rel-agree|Haiku=8:compound|HaikuPos=NOUN:NN:Number=Sing
8	light	light	NOUN	NN	Number=Sing	2	obl	_	_
9	because	because	ADP	IN	_	12	case	_	_
10	of	of	ADP	IN	_	9	fixed	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	chemical	chemical	NOUN	NN	Number=Sing	2	obl	_	_
13	in	in	ADP	IN	_	16	case	_	_
14	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	16	nmod:poss	_	_
15	outer	outer	ADJ	JJ	Degree=Pos	16	amod	_	_
16	shell	shell	NOUN	NN	Number=Sing	12	nmod	_	_
17	;	;	PUNCT	,	_	21	punct	_	_
18	scientists	scientist	NOUN	NNS	Number=Plur	21	nsubj	_	_
19	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	21	cop	_	_
20	not	not	PART	RB	Polarity=Neg	21	advmod	_	_
21	sure	sure	ADJ	JJ	Degree=Pos	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
22	why	why	ADV	WRB	PronType=Int	21	advmod	_	Agree=R5-strong|Haiku=26:advmod
23	,	,	PUNCT	,	_	26	punct	_	_
24	and	and	CCONJ	CC	_	26	cc	_	_
25	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	26	nsubj	_	_
26	find	find	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	21	conj	_	_
27	scorpions	scorpion	NOUN	NNS	Number=Plur	26	obj	_	_
28	at	at	ADP	IN	_	29	case	_	_
29	night	night	NOUN	NN	Number=Sing	26	obl	_	_
30	with	with	ADP	IN	_	32	case	_	_
31	UV	ultra-violet	NOUN	NN	Abbr=Yes|Number=Sing	32	compound	_	_
32	torches	torch	NOUN	NNS	Number=Plur	26	obl	_	_
33	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **glow** | present | Scorpions | blue green |  | ultraviolet light |  | because a chemical in tarantulas's outer shell | vn light\_emission-43.1 «NP V NP.theme»: agent=Agent green=Theme |
| 2 | **not** **is** | present | scientists |  |  |  |  | sure *property* | tree rules |
| 3 | **find** | present | scientists *= scientist* | scorpions |  |  | night | with UV torches | vn discover-84 «NP V NP»: agent=Agent scorpion=Topic |

<!-- .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:097-the-insect-house-ants-stick-insects-tarantulas-and-scorpions.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 ×2. **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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