Table: whoseline_episodes
Columns: date
episode
performer_1
performer_2
performer_3
performer_4

Question: Who is the second performer in episode 5?
SQL: SELECT "performer_2" FROM whoseline_episodes WHERE "episode" = 5

Question: How many times was performer 3 Kate Robbins?
SQL: SELECT COUNT("date") FROM whoseline_episodes WHERE "performer_3" = 'Kate Robbins'

Question: Who was perfomer one on 30 January 1988?
SQL: SELECT "performer_1" FROM whoseline_episodes WHERE "date" = '30 January 1988'

Question: Who was performer 4 when Kate Robbins was performer 3?
SQL: SELECT "performer_4" FROM whoseline_episodes WHERE "performer_3" = 'Kate Robbins'

Question: How many episodes was Jimmy Mulville performer 4?
SQL: SELECT COUNT("episode") FROM whoseline_episodes WHERE "performer_4" = 'Jimmy Mulville'