---
title: That is why 1900 was not a leap year, but 2000 was, and 2100 will no… — Leap years and 29 February birthdays · tree and pragmatics
description: That is why 1900 was not a leap year, but 2000 was, and 2100 will not be. Who acts: That, 1900. A sentence of the lesson «Leap years and 29 February birthdays» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Leap years and 29 February birthdays, sentence 6

<!-- .ven lang=en -->
That is why 1900 was not a leap year, but 2000 was, and 2100 will not be.

<!-- .vintro -->
**Who acts:** That, 1900 · **What happens:** be, not be · **To what, where:** leap year, 2000

<!-- .vabout -->
This is a sentence of the lesson «Leap years and 29 February birthdays» 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 (That, 1900), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:112-leap-years-and-29-february-birthdays.lesson:6
# text = That is why 1900 was not a leap year, but 2000 was, and 2100 will not be.
# source = school lesson (ours)
# course = world
# lesson = 112-leap-years-and-29-february-birthdays.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	That	that	PRON	DT	Number=Sing|PronType=Dem	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	why	why	ADV	WRB	PronType=Rel	0	root	_	_
4	1900	1900	NUM	CD	NumForm=Digit|NumType=Card	9	nsubj	_	_
5	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	cop	_	_
6	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
8	leap	leap	NOUN	NN	Number=Sing	9	compound	_	_
9	year	year	NOUN	NN	Number=Sing	3	obl:unmarked	_	_
10	,	,	PUNCT	,	_	12	punct	_	_
11	but	but	CCONJ	CC	_	12	cc	_	_
12	2000	2000	NUM	CD	NumForm=Digit|NumType=Card	9	appos	_	_
13	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	12	cop	_	_
14	,	,	PUNCT	,	_	16	punct	_	_
15	and	and	CCONJ	CC	_	16	cc	_	_
16	2100	2100	NUM	CD	NumForm=Digit|NumType=Card	9	appos	_	_
17	will	will	AUX	MD	VerbForm=Fin	19	aux	_	_
18	not	not	PART	RB	Polarity=Neg	19	advmod	_	_
19	be	be	AUX	VB	VerbForm=Inf	16	conj	_	_
20	.	.	PUNCT	.	_	3	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 | **is** | present | That |  |  |  |  | why *property* | tree rules |
| 2 | **not** **is a** | past | 1900 | a leap year |  |  |  |  | tree rules |
| 3 | **is a** | past |  | 2000 |  |  |  |  | tree rules |

<!-- .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:112-leap-years-and-29-february-birthdays.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): 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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