---
title: The 20-20-20 rule says every 20 minutes look at something 20 feet (a… — Screens, eyes and sleep · tree and pragmatics
description: The 20-20-20 rule says every 20 minutes look at something 20 feet (about 6 metres) away for 20 seconds. Who acts: 20-20-20 rule, 20 minutes. A sentence of the lesson «Screens, eyes and sleep» of the medicine course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Screens, eyes and sleep, sentence 6

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The 20-20-20 rule says every 20 minutes look at something 20 feet (about 6 metres) away for 20 seconds.

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**Who acts:** 20-20-20 rule, 20 minutes · **What happens:** say, look · **Speech:** someone speaks here

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This is a sentence of the lesson «Screens, eyes and sleep» of the medicine 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 (20-20-20 rule, 20 minutes), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:035-screens-eyes-and-sleep.lesson:6
# text = The 20-20-20 rule says every 20 minutes look at something 20 feet (about 6 metres) away for 20 seconds.
# source = school lesson (ours)
# course = medicine
# lesson = 035-screens-eyes-and-sleep.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	3	det	_	_
2	20-20-20	20-20-20	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	rule	rule	NOUN	NN	Number=Sing	4	nsubj	_	_
4	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	every	every	DET	DT	PronType=Ind	7	det	_	Agree=R5-strong|Haiku=6:det
6	20	20	NUM	CD	NumForm=Digit|NumType=Card	7	nummod	_	_
7	minutes	minute	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	look	look	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	ccomp	_	_
9	at	at	ADP	IN	_	10	case	_	_
10	something	something	PRON	NN	Number=Sing|PronType=Ind	8	obl	_	_
11	20	20	NUM	CD	NumForm=Digit|NumType=Card	12	nummod	_	_
12	feet	foot	NOUN	NNS	Number=Plur	18	obl:unmarked	_	_
13	(	(	PUNCT	-LRB-	_	16	punct	_	_
14	about	about	ADV	RB	_	15	advmod	_	_
15	6	6	NUM	CD	NumForm=Digit|NumType=Card	16	nummod	_	_
16	metres	metre	NOUN	NNS	Number=Plur	12	appos	_	_
17	)	)	PUNCT	-RRB-	_	16	punct	_	_
18	away	away	ADV	RB	_	8	advmod	_	_
19	for	for	ADP	IN	_	21	case	_	_
20	20	20	NUM	CD	NumForm=Digit|NumType=Card	21	nummod	_	_
21	seconds	second	NOUN	NNS	Number=Plur	8	obl	_	_
22	.	.	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 | **say** *speech: assert* | present | the 20-20-20 rule |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **look** | present | every 20 minutes |  |  |  | second | at something; away *property* | vn peer-30.3 «NP V PP.theme»: agent=Agent at something=Theme |

<!-- .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:medicine:035-screens-eyes-and-sleep.lesson:6`.

**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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