text: -- Your SQL goes here
  create table news (
  	id SERIAL PRIMARY KEY,
  	guid varchar(100),
  	source_type news_source_type,
  	source_id int,
  	insert_date timestamp,
  	title varchar(200),
  	content text,
  	link varchar(500),
  	color varchar(10)
  );
  
  create index news_source on news (source_type, source_id);
  create unique index news_guid on news (guid);
  