generate questions: In 1900, the Los Angeles Times defined southern California as including "the seven counties of Los Angeles, San Bernardino, Orange, Riverside, San Diego, Ventura and Santa Barbara." In 1999, the Times added a newer county—Imperial—to that list.
Which newspaper defined southern California? {sep_token} In which year did the newspaper define southern California? {sep_token} In which year did the newspaper change its previous definition? {sep_token} What was the newer county added to the list? {sep_token} How many counties initially made up the definition of southern California? {sep_token}