Table schema:
CREATE TABLE table_name_93 (performer_1 VARCHAR, performer_3 VARCHAR, performer_4 VARCHAR)

Question: Performer 3 of paul merton, and a Performer 4 of sandi toksvig is which performer 1?
SQL: SELECT performer_1 FROM table_name_93 WHERE performer_3 = "paul merton" AND performer_4 = "sandi toksvig"