Pendulums, Greenwich and railway time, atomic clocks and phones, sentence 22

The first accurate atomic clock was built in London in 1955; today a second is measured by counting over 9 billion tiny ticks of caesium atoms.

What happens: build, measure, count, tick · To what, where: first accurate atomic clock, London, second, billion tiny ticks, caesium atoms

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: what happens, when and where, as Mova's frames read it from the tree.

The tree

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	5 clock	det
2	first	first	ADJ	Degree=Pos NumForm=Word NumType=Ord	5 clock	amod
3	accurate	accurate	ADJ	Degree=Pos	5 clock	amod
4	atomic	atomic	ADJ	Degree=Pos	5 clock	amod
5	clock	clock	NOUN	Number=Sing	7 built	nsubj:pass
6	was	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Past VerbForm=Fin	7 built	aux:pass
7	built	build	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
8	in	in	ADP	_	9 London	case
9	London	London	PROPN	Number=Sing	7 built	obl
10	in	in	ADP	_	11 1955	case
11	1955	1955	NUM	NumForm=Digit NumType=Card	7 built	obl
12	;	;	PUNCT	_	11 1955	punct
13	today	today	NOUN	Number=Sing	17 measured	obl:unmarked
14	a	a	DET	Definite=Ind PronType=Art	15 second	det
15	second	second	NOUN	Number=Sing	17 measured	nsubj:pass
16	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	17 measured	aux:pass
17	measured	measure	VERB	Tense=Past VerbForm=Part Voice=Pass	7 built	parataxis
18	by	by	SCONJ	_	19 counting	mark
19	counting	count	VERB	Tense=Pres VerbForm=Part	17 measured	advcl
20	over	over	ADV	_	21 9	advmod
21	9	9	NUM	NumForm=Digit NumType=Card	22 billion	compound
22	billion	billion	NUM	NumForm=Word NumType=Card	24 ticks	nummod
23	tiny	tiny	ADJ	Degree=Pos	24 ticks	amod
24	ticks	tick	NOUN	Number=Plur	19 counting	obj
25	of	of	ADP	_	27 atoms	case
26	caesium	caesium	NOUN	Number=Sing	27 atoms	compound
27	atoms	atom	NOUN	Number=Plur	24 ticks	nmod
28	.	.	PUNCT	_	7 built	punct

Pragmatics

form: statement
act: assert
voice: narrator
polarity: none
teacher: kept the draft

#	verb	tense, mood	what, whom	where	when	other	roles by
1	build	past · passive	the first accurate atomic clock	London		in 1955	vn build-26.1-1 «NP.asset V NP»: subject=Product
2	measure	present · passive	a second		today		vn register-54.1-2-1 «NP V NP.value»: subject=Value
3	count	gerund	billion tiny ticks of caesium atoms				vn multiply-108 «NP V NP»: agent=Agent tick=Theme
4	tick		caesium atoms				nom tick «event transitive»: of=patient

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.

Licence: CC 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:22.

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 ×2, 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.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/world/123-pendulums-greenwich-atomic-clocks/22/