---
title: The red time ball at the Royal Observatory, Greenwich, has dropped a… — Pendulums, Greenwich and railway time, atomic cl… · tree and pragmatics
description: The red time ball at the Royal Observatory, Greenwich, has dropped at 1 pm every day since 1833 so ships could set their clocks. Who acts: red time ball, ships. A sentence of the lesson «Pendulums, Greenwich and railway time, atomic clocks and phones» of the world course of Mova's primary school wit
---

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# Pendulums, Greenwich and railway time, atomic clocks and phones, sentence 17

<!-- .ven lang=en -->
The red time ball at the Royal Observatory, Greenwich, has dropped at 1 pm every day since 1833 so ships could set their clocks.

<!-- .vintro -->
**Who acts:** red time ball, ships · **What happens:** drop, set · **To what, where:** 1, 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 (red time ball, ships), 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:17
# text = The red time ball at the Royal Observatory, Greenwich, has dropped at 1 pm every day since 1833 so ships could set their clocks.
# 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): R7-rel-agree ×1
1	The	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
2	red	red	ADJ	JJ	Degree=Pos	4	amod	_	_
3	time	time	NOUN	NN	Number=Sing	4	compound	_	_
4	ball	ball	NOUN	NN	Number=Sing	13	nsubj	_	_
5	at	at	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	Royal	Royal	PROPN	NNP	_	8	flat	_	_
8	Observatory	Observatory	PROPN	NNP	Number=Sing	4	nmod	_	_
9	,	,	PUNCT	,	_	10	punct	_	_
10	Greenwich	Greenwich	PROPN	NNP	Number=Sing	8	flat	_	_
11	,	,	PUNCT	,	_	4	punct	_	_
12	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	aux	_	_
13	dropped	drop	VERB	VBN	Tense=Past|VerbForm=Part	0	root	_	_
14	at	at	ADP	IN	_	15	case	_	_
15	1	1	NUM	CD	NumForm=Digit|NumType=Card	13	obl	_	_
16	pm	p.m.	NOUN	NN	Number=Sing	15	nmod:unmarked	_	_
17	every	every	DET	DT	PronType=Tot	18	det	_	_
18	day	day	NOUN	NN	Number=Sing	13	obl:unmarked	_	_
19	since	since	ADP	IN	_	20	case	_	_
20	1833	1833	NUM	CD	NumForm=Digit|NumType=Card	13	obl	_	_
21	so	so	ADV	RB	_	24	advmod	_	Agree=R7-rel-agree|Haiku=24:mark|HaikuPos=SCONJ:IN:_
22	ships	ship	NOUN	NNS	Number=Plur	24	nsubj	_	_
23	could	could	AUX	MD	VerbForm=Fin	24	aux	_	_
24	set	set	VERB	VB	VerbForm=Inf	13	advcl	_	_
25	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	26	nmod:poss	_	_
26	clocks	clock	NOUN	NNS	Number=Plur	24	obj	_	_
27	.	.	PUNCT	.	_	13	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 | **drop** | present · perfect | the red time ball at the Royal Observatory |  |  | 1  pm | since 1833; day |  | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme at 1=Trajectory |
| 2 | **set** | could | ships | ships's clocks |  |  |  |  | vn other\_cos-45.4-1 «NP V NP ADJ»: agent=Patient clock=Result |

<!-- .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:world:123-pendulums-greenwich-atomic-clocks.lesson:17`.

**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 ×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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