CREATE TABLE table_30863 ("Episode #" FLOAT, "Series #" FLOAT, "Episode Title" CLOB, "Original air date" CLOB, "Production Code" FLOAT)

What is the original airdate of episode #31?
SELECT "Original air date" FROM table_30863 WHERE "Episode #" = '31'
SELECT "Original air date" FROM "table_30863" WHERE "Episode #" = '31'