---
title: When you are cold, blood vessels in the skin narrow so less heat is… — Thinking like a scientist: the body and physics · tree and pragmatics
description: When you are cold, blood vessels in the skin narrow so less heat is lost from the skin. Who acts: you, blood vessels. A sentence of the lesson «Thinking like a scientist: the body and physics» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Thinking like a scientist: the body and physics, sentence 18

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When you are cold, blood vessels in the skin narrow so less heat is lost from the skin.

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**Who acts:** you, blood vessels · **What happens:** be, narrow, lose · **To what, where:** less heat, skin

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This is a sentence of the lesson «Thinking like a scientist: the body and physics» of the world 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 (you, blood vessels), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:040-body-and-physics-reasoning.lesson:18
# text = When you are cold, blood vessels in the skin narrow so less heat is lost from the skin.
# source = school lesson (ours)
# course = world
# lesson = 040-body-and-physics-reasoning.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): R7-rel-agree ×2
1	When	when	SCONJ	WRB	_	4	mark	_	_
2	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	4	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	cold	cold	ADJ	JJ	Degree=Pos	11	advcl	_	_
5	,	,	PUNCT	,	_	11	punct	_	_
6	blood	blood	NOUN	NN	Number=Sing	7	compound	_	_
7	vessels	vessel	NOUN	NNS	Number=Plur	11	nsubj	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	skin	skin	NOUN	NN	Number=Sing	7	nmod	_	_
11	narrow	narrow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
12	so	so	ADV	RB	_	16	advmod	_	Agree=R7-rel-agree|Haiku=16:mark|HaikuPos=SCONJ:IN:_
13	less	less	ADJ	JJR	Degree=Cmp	14	amod	_	Agree=R7-rel-agree|Haiku=14:advmod|HaikuPos=ADV:RBR:Degree=Cmp
14	heat	heat	NOUN	NN	Number=Sing	16	nsubj:pass	_	_
15	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	aux:pass	_	_
16	lost	lose	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	advcl	_	_
17	from	from	ADP	IN	_	19	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	skin	skin	NOUN	NN	Number=Sing	16	obl	_	_
20	.	.	PUNCT	.	_	11	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | you |  |  |  |  | cold *property* | tree rules |
| 2 | **narrow** | present | blood vessels in the skin |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 3 | **lose** | present · passive |  | less heat |  | the skin |  |  | vn remove-10.1 «NP V NP PP»: subject=Theme from skin=Initial\_Location |

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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:world:040-body-and-physics-reasoning.lesson:18`.

**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): 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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