---
title: Every fourth year is a leap year with an extra day, 29 February; 202… — Olympiad: speed, space and seasons ★★★ · tree and pragmatics
description: Every fourth year is a leap year with an extra day, 29 February; 2020, 2024 and 2028 are leap years. Who acts: fourth year, 2020. A sentence of the lesson «Olympiad: speed, space and seasons ★★★» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clau
---

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# Olympiad: speed, space and seasons ★★★, sentence 10

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Every fourth year is a leap year with an extra day, 29 February; 2020, 2024 and 2028 are leap years.

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**Who acts:** fourth year, 2020 · **What happens:** be · **To what, where:** leap year, leap years

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This is a sentence of the lesson «Olympiad: speed, space and seasons ★★★» of the physics 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 (fourth year, 2020), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:044-olympiad-speed-space-and-seasons.lesson:10
# text = Every fourth year is a leap year with an extra day, 29 February; 2020, 2024 and 2028 are leap years.
# source = school lesson (ours)
# course = physics
# lesson = 044-olympiad-speed-space-and-seasons.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): R3-conj-first ×1, R6-punct-agree ×1, R7-rel-agree ×1
1	Every	every	DET	DT	PronType=Tot	3	det	_	_
2	fourth	fourth	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Ord	3	amod	_	_
3	year	year	NOUN	NN	Number=Sing	7	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	leap	leap	NOUN	NN	Number=Sing	7	compound	_	_
7	year	year	NOUN	NN	Number=Sing	0	root	_	_
8	with	with	ADP	IN	_	11	case	_	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	extra	extra	ADJ	JJ	Degree=Pos	11	amod	_	_
11	day	day	NOUN	NN	Number=Sing	7	nmod	_	_
12	,	,	PUNCT	,	_	13	punct	_	_
13	29	29	NUM	CD	NumForm=Digit|NumType=Card	7	appos	_	_
14	February	February	PROPN	NNP	Number=Sing	13	nmod:unmarked	_	_
15	;	;	PUNCT	:	_	16	punct	_	_
16	2020	2020	NUM	CD	NumForm=Digit|NumType=Card	23	nsubj	_	_
17	,	,	PUNCT	,	_	18	punct	_	_
18	2024	2024	NUM	CD	NumForm=Digit|NumType=Card	16	conj	_	_
19	and	and	CCONJ	CC	_	20	cc	_	_
20	2028	2028	NUM	CD	NumForm=Digit|NumType=Card	16	conj	_	Agree=R3-conj-first|Haiku=18:conj
21	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	23	cop	_	_
22	leap	leap	NOUN	NN	Number=Sing	23	compound	_	Agree=R7-rel-agree|Haiku=23:amod|HaikuPos=ADJ:JJ:Degree=Pos
23	years	year	NOUN	NNS	Number=Plur	7	parataxis	_	_
24	.	.	PUNCT	.	_	7	punct	_	Agree=R6-punct-agree|Haiku=22:punct
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | every fourth year | a leap year |  |  | day |  | tree rules |
| 2 | **is a** | present | 2020 | leap years |  |  |  |  | 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:physics:044-olympiad-speed-space-and-seasons.lesson:10`.

**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): R3-conj-first ×1, R6-punct-agree ×1, 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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- ← previous: [Olympiad: speed, space and seasons ★★★, 9](https://md.mova.elamur.ai/free/en/corpora/school/physics/44-olympiad-speed-space-and-seasons/9/)
- next →: [Olympiad: speed, space and seasons ★★★, 11](https://md.mova.elamur.ai/free/en/corpora/school/physics/44-olympiad-speed-space-and-seasons/11/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/44-olympiad-speed-space-and-seasons/)