---
title: The brain also plays tricks at night: twitches as you drop off, nigh… — Sleep and dreams in people · tree and pragmatics
description: The brain also plays tricks at night: twitches as you drop off, nightmares, sleepwalking and dreams that vanish by breakfast are all normal parts of sleep. Who acts: brain, you, dreams. A sentence of the lesson «Sleep and dreams in people» of the biology course of Mova's primary school with its depe
---

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# Sleep and dreams in people, sentence 3

<!-- .ven lang=en -->
The brain also plays tricks at night: twitches as you drop off, nightmares, sleepwalking and dreams that vanish by breakfast are all normal parts of sleep.

<!-- .vintro -->
**Who acts:** brain, you, dreams · **What happens:** play, drop off, vanish, be · **To what, where:** tricks, normal parts

<!-- .vabout -->
This is a sentence of the lesson «Sleep and dreams in people» 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 (brain, you, dreams), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:363-sleep-and-dreams-in-people.lesson:3
# text = The brain also plays tricks at night: twitches as you drop off, nightmares, sleepwalking and dreams that vanish by breakfast are all normal parts of sleep.
# source = school lesson (ours)
# course = biology
# lesson = 363-sleep-and-dreams-in-people.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
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	brain	brain	NOUN	NN	Number=Sing	4	nsubj	_	_
3	also	also	ADV	RB	_	4	advmod	_	_
4	plays	play	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	tricks	trick	NOUN	NNS	Number=Plur	4	obj	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	night	night	NOUN	NN	Number=Sing	4	obl	_	_
8	:	:	PUNCT	:	_	9	punct	_	_
9	twitches	twitch	NOUN	NNS	Number=Plur	7	conj	_	_
10	as	as	SCONJ	IN	_	12	mark	_	_
11	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	12	nsubj	_	_
12	drop	drop	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	4	advcl	_	_
13	off	off	ADP	RP	_	12	compound:prt	_	_
14	,	,	PUNCT	,	_	15	punct	_	_
15	nightmares	nightmare	NOUN	NNS	Number=Plur	9	conj	_	_
16	,	,	PUNCT	,	_	17	punct	_	_
17	sleepwalking	sleepwalking	NOUN	NN	Number=Sing	15	conj	_	Agree=R5-strong|Haiku=9:conj|HaikuPos=VERB:VBG:Tense=Pres|VerbForm=Part
18	and	and	CCONJ	CC	_	19	cc	_	_
19	dreams	dream	NOUN	NNS	Number=Plur	27	nsubj	_	_
20	that	that	PRON	WDT	PronType=Rel	21	nsubj	_	_
21	vanish	vanish	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	19	acl:relcl	_	_
22	by	by	ADP	IN	_	23	case	_	_
23	breakfast	breakfast	NOUN	NN	Number=Sing	21	obl	_	_
24	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	27	cop	_	_
25	all	all	ADV	RB	_	26	advmod	_	_
26	normal	normal	ADJ	JJ	Degree=Pos	27	amod	_	_
27	parts	part	NOUN	NNS	Number=Plur	4	parataxis	_	_
28	of	of	ADP	IN	_	29	case	_	_
29	sleep	sleep	NOUN	NN	Number=Sing	27	nmod	_	_
30	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **play** | present | the brain | tricks |  |  | night |  | vn use-105.1 «NP V NP»: agent=Agent trick=Theme |
| 2 | **drop off** | present | you |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 3 | **vanish** | present | dreams |  |  |  |  | by breakfast | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 4 | **is a** | present | dreams | normal parts |  |  |  | of sleep | 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.

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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:363-sleep-and-dreams-in-people.lesson:3`.

**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. **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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