### Database Schema:
CREATE TABLE tags (
	index	INTEGER	NULL	PRIMARY KEY,
	id	INTEGER	NULL,
	tag	TEXT	NULL,
	foreign key (id) references torrents (id)
);

CREATE TABLE torrents (
	groupName	TEXT	NULL,
	totalSnatched	INTEGER	NULL,
	artist	TEXT	NULL,
	groupYear	INTEGER	NULL,
	releaseType	TEXT	NULL,
	groupId	INTEGER	NULL,
	id	INTEGER	NULL	PRIMARY KEY
);

### User's Query:
Indicates groups with id from 10 to 20 with singles downloaded at least 20.

### Extra Knowledge:
releaseType = 'single'; downloaded at least 20 refers to totalSnatched ≥ 20; id from 10 to 20 refer to id between 10 and 20; groups refer to groupName;
SELECT groupName FROM torrents WHERE totalSnatched >= 20 AND releaseType LIKE 'single' AND id BETWEEN 10 AND 20