---
title: Good clocks before pendulums could be about 15 minutes wrong in a da… — Pendulums, Greenwich and railway time, atomic cl… · tree and pragmatics
description: Good clocks before pendulums could be about 15 minutes wrong in a day, and pendulum clocks about 15 seconds: 900 seconds ÷ 15 = 60 times better. Who acts: pendulums. A sentence of the lesson «Pendulums, Greenwich and railway time, atomic clocks and phones» of the world course of Mova's primary schoo
---

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# Pendulums, Greenwich and railway time, atomic clocks and phones, sentence 14

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Good clocks before pendulums could be about 15 minutes wrong in a day, and pendulum clocks about 15 seconds: 900 seconds ÷ 15 = 60 times better.

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**Who acts:** pendulums · **What happens:** be · **To what, where:** Good clocks

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This is a sentence of the lesson «Pendulums, Greenwich and railway time, atomic clocks and phones» 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 (pendulums), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:123-pendulums-greenwich-atomic-clocks.lesson:14
# text = Good clocks before pendulums could be about 15 minutes wrong in a day, and pendulum clocks about 15 seconds: 900 seconds ÷ 15 = 60 times better.
# source = school lesson (ours)
# course = world
# lesson = 123-pendulums-greenwich-atomic-clocks.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): no change
1	Good	good	ADJ	JJ	Degree=Pos	2	amod	_	_
2	clocks	clock	NOUN	NNS	Number=Plur	0	root	_	_
3	before	before	SCONJ	IN	_	10	mark	_	_
4	pendulums	pendulum	NOUN	NNS	Number=Plur	10	nsubj	_	_
5	could	could	AUX	MD	VerbForm=Fin	10	aux	_	_
6	be	be	AUX	VB	VerbForm=Inf	10	cop	_	_
7	about	about	ADV	RB	_	8	advmod	_	_
8	15	15	NUM	CD	NumForm=Digit|NumType=Card	9	nummod	_	_
9	minutes	minute	NOUN	NNS	Number=Plur	10	obl:unmarked	_	_
10	wrong	wrong	ADJ	JJ	Degree=Pos	2	acl	_	_
11	in	in	ADP	IN	_	13	case	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
13	day	day	NOUN	NN	Number=Sing	10	obl	_	_
14	,	,	PUNCT	,	_	17	punct	_	_
15	and	and	CCONJ	CC	_	17	cc	_	_
16	pendulum	pendulum	NOUN	NN	Number=Sing	17	compound	_	_
17	clocks	clock	NOUN	NNS	Number=Plur	2	conj	_	_
18	about	about	ADV	RB	_	19	advmod	_	_
19	15	15	NUM	CD	NumForm=Digit|NumType=Card	20	nummod	_	_
20	seconds	second	NOUN	NNS	Number=Plur	17	conj	_	_
21	:	:	PUNCT	:	_	23	punct	_	_
22	900	900	NUM	CD	NumForm=Digit|NumType=Card	23	nummod	_	_
23	seconds	second	NOUN	NNS	Number=Plur	17	conj	_	_
24	÷	÷	SYM	SYM	_	25	advmod	_	_
25	15	15	NUM	CD	NumForm=Digit|NumType=Card	26	nummod	_	_
26	=	=	SYM	SYM	_	17	nmod	_	_
27	60	60	NUM	CD	NumForm=Digit|NumType=Card	28	nummod	_	_
28	times	time	NOUN	NNS	Number=Plur	29	obl:unmarked	_	_
29	better	good	ADJ	JJR	Degree=Cmp	26	xcomp	_	_
30	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: neg
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | could | pendulums | Good clocks and pendulum clocks and 15 seconds and 900 seconds *not said here* |  |  | day; minute | wrong *property* | tree rules |

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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:123-pendulums-greenwich-atomic-clocks.lesson:14`.

**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): no change. **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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