CREATE TABLE table_19694 ("Date" TEXT, "Episode" FLOAT, "Performer 1" TEXT, "Performer 2" TEXT, "Performer 3" TEXT, "Performer 4" TEXT)

Who was performer 4 when Kate Robbins was performer 3?
SELECT "Performer 4" FROM table_19694 WHERE "Performer 3" = 'Kate Robbins'
SELECT "Performer 4" FROM "table_19694" WHERE "Performer 3" = 'Kate Robbins'