---
title: Soviet authorities first kept quiet about Chornobyl; Sweden detected… — Chornobyl and independence in 1991 · tree and pragmatics
description: Soviet authorities first kept quiet about Chornobyl; Sweden detected the radiation on 28 April, Moscow announced it only briefly that evening, and the May Day parade in Kyiv went ahead on 1 May. Who acts: Soviet authorities, Sweden, Moscow, Day parade. A sentence of the lesson «Chornobyl and indepen
---

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# Chornobyl and independence in 1991, sentence 7

<!-- .ven lang=en -->
Soviet authorities first kept quiet about Chornobyl; Sweden detected the radiation on 28 April, Moscow announced it only briefly that evening, and the May Day parade in Kyiv went ahead on 1 May.

<!-- .vintro -->
**Who acts:** Soviet authorities, Sweden, Moscow, Day parade · **What happens:** keep, detect, announce, go · **To what, where:** radiation, 28, 1

<!-- .vabout -->
This is a sentence of the lesson «Chornobyl and independence in 1991» of the history 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 (Soviet authorities, Sweden, Moscow, Day parade), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:history:048-chornobyl-and-independence-in-1991.lesson:7
# text = Soviet authorities first kept quiet about Chornobyl; Sweden detected the radiation on 28 April, Moscow announced it only briefly that evening, and the May Day parade in Kyiv went ahead on 1 May.
# source = school lesson (ours)
# course = history
# lesson = 048-chornobyl-and-independence-in-1991.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	Soviet	soviet	ADJ	JJ	Degree=Pos	2	amod	_	_
2	authorities	authority	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	first	first	ADV	RB	NumForm=Word|NumType=Ord	4	advmod	_	_
4	kept	keep	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
5	quiet	quiet	ADJ	JJ	Degree=Pos	4	xcomp	_	_
6	about	about	ADP	IN	_	7	case	_	_
7	Chornobyl	Chornobyl	PROPN	NNP	Number=Sing	5	obl	_	_
8	;	;	PUNCT	,	_	10	punct	_	_
9	Sweden	Sweden	PROPN	NNP	Number=Sing	10	nsubj	_	_
10	detected	detect	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	parataxis	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	radiation	radiation	NOUN	NN	Number=Sing	10	obj	_	_
13	on	on	ADP	IN	_	14	case	_	_
14	28	28	NUM	CD	NumForm=Digit|NumType=Card	10	obl	_	_
15	April	April	PROPN	NNP	Number=Sing	14	nmod:unmarked	_	_
16	,	,	PUNCT	,	_	18	punct	_	_
17	Moscow	Moscow	PROPN	NNP	Number=Sing	18	nsubj	_	_
18	announced	announce	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	10	conj	_	_
19	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	obj	_	_
20	only	only	ADV	RB	_	21	advmod	_	_
21	briefly	briefly	ADV	RB	_	18	advmod	_	_
22	that	that	DET	DT	Number=Sing|PronType=Dem	23	det	_	_
23	evening	evening	NOUN	NN	Number=Sing	18	obl:unmarked	_	_
24	,	,	PUNCT	,	_	32	punct	_	_
25	and	and	CCONJ	CC	_	32	cc	_	_
26	the	the	DET	DT	Definite=Def|PronType=Art	29	det	_	_
27	May	May	PROPN	NNP	Number=Sing	28	compound	_	_
28	Day	Day	PROPN	NNP	Number=Sing	29	compound	_	_
29	parade	parade	NOUN	NN	Number=Sing	32	nsubj	_	_
30	in	in	ADP	IN	_	31	case	_	_
31	Kyiv	Kyiv	PROPN	NNP	Number=Sing	29	nmod	_	_
32	went	go	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	conj	_	_
33	ahead	ahead	ADV	RB	_	32	advmod	_	_
34	on	on	ADP	IN	_	35	case	_	_
35	1	1	NUM	CD	NumForm=Digit|NumType=Card	32	obl	_	_
36	May	May	PROPN	NNP	Number=Sing	35	nmod:unmarked	_	_
37	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: narrate
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | past | Soviet authorities |  |  |  |  | first, quiet *property* | vn keep-15.2 «NP V NP»: agent=Agent |
| 2 | **detect** | past | Sweden | the radiation |  | 28  April |  |  | vn see-30.1-1 «NP V S»: agent=Experiencer radiation=Stimulus |
| 3 | **announce** *speech: other* | past | Moscow | radiation |  |  | evening | briefly *property* | vn reflexive\_appearance-48.1.2 «NP V NP»: agent=Agent it=Theme |
| 4 | **go** | past | the Day parade in Kyiv |  |  | 1  May |  | ahead *property* | vn occur-48.3-2 «NP V PP»: agent=Theme on 1=Location |

<!-- .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:history:048-chornobyl-and-independence-in-1991.lesson:7`.

**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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