---
title: Astronomers (scientists who study the sky) start the seasons at the… — Seasons, terms and holidays · tree and pragmatics
description: Astronomers (scientists who study the sky) start the seasons at the equinoxes and solstices: spring at about 20 March, summer at the longest day, about 21 June. Who acts: scientists, Astronomers. A sentence of the lesson «Seasons, terms and holidays» of the world course of Mova's primary school with
---

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# Seasons, terms and holidays, sentence 5

<!-- .ven lang=en -->
Astronomers (scientists who study the sky) start the seasons at the equinoxes and solstices: spring at about 20 March, summer at the longest day, about 21 June.

<!-- .vintro -->
**Who acts:** scientists, Astronomers · **What happens:** study, start · **To what, where:** sky, equinoxes

<!-- .vabout -->
This is a sentence of the lesson «Seasons, terms and holidays» 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 (scientists, Astronomers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:113-seasons-terms-and-holidays.lesson:5
# text = Astronomers (scientists who study the sky) start the seasons at the equinoxes and solstices: spring at about 20 March, summer at the longest day, about 21 June.
# source = school lesson (ours)
# course = world
# lesson = 113-seasons-terms-and-holidays.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): R5-strong ×1, R6-punct-agree ×1
1	Astronomers	astronomer	NOUN	NNS	Number=Plur	9	nsubj	_	_
2	(	(	PUNCT	-LRB-	_	3	punct	_	_
3	scientists	scientist	NOUN	NNS	Number=Plur	1	appos	_	_
4	who	who	PRON	WP	PronType=Rel	5	nsubj	_	_
5	study	study	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	sky	sky	NOUN	NN	Number=Sing	5	obj	_	_
8	)	)	PUNCT	-RRB-	_	3	punct	_	Agree=R6-punct-agree|Haiku=5:punct
9	start	start	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	seasons	season	NOUN	NNS	Number=Plur	9	obj	_	_
12	at	at	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	equinoxes	equinox	NOUN	NNS	Number=Plur	9	obl	_	Agree=R5-strong|Haiku=11:nmod
15	and	and	CCONJ	CC	_	16	cc	_	_
16	solstices	solstice	NOUN	NNS	Number=Plur	14	conj	_	_
17	:	:	PUNCT	:	_	18	punct	_	_
18	spring	spring	NOUN	NN	Number=Sing	14	nmod	_	_
19	at	at	ADP	IN	_	22	case	_	_
20	about	about	ADV	RB	_	21	advmod	_	_
21	20	20	NUM	CD	NumForm=Digit|NumType=Card	22	nummod	_	_
22	March	March	PROPN	NNP	Number=Sing	18	nmod	_	_
23	,	,	PUNCT	,	_	24	punct	_	_
24	summer	summer	NOUN	NN	Number=Sing	18	conj	_	_
25	at	at	ADP	IN	_	28	case	_	_
26	the	the	DET	DT	Definite=Def|PronType=Art	28	det	_	_
27	longest	long	ADJ	JJS	Degree=Sup	28	amod	_	_
28	day	day	NOUN	NN	Number=Sing	18	nmod	_	_
29	,	,	PUNCT	,	_	31	punct	_	_
30	about	about	ADV	RB	_	31	advmod	_	_
31	21	21	NUM	CD	NumForm=Digit|NumType=Card	32	nummod	_	_
32	June	June	PROPN	NNP	Number=Sing	24	nmod:unmarked	_	_
33	.	.	PUNCT	.	_	9	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 | **study** | present | scientists | the sky |  |  |  |  | vn learn-14-1 «NP V NP»: agent=Agent sky=Topic |
| 2 | **start** | present | Astronomers |  |  | the equinoxes  spring at 20 March at the longest day and summer  21 June and solstices | season |  | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |

<!-- .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:113-seasons-terms-and-holidays.lesson:5`.

**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 ×1, R6-punct-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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