generate questions: Western Catalan comprises the two dialects of Northwestern Catalan and Valencian; the Eastern block comprises four dialects: Central Catalan, Balearic, Rossellonese, and Alguerese. Each dialect can be further subdivided in several subdialects.
What two dialects does Western Catalan include? {sep_token} How many dialects are in the eastern group? {sep_token} To what division does Central Catalan belong? {sep_token} What other divisions can be made of dialects? {sep_token} What block does Northwestern Catalan and Valencian belong to?