CREATE TABLE table_516 ("Series Ep #" FLOAT, "Season 2 Ep #" FLOAT, "Title" TEXT, "Director" TEXT, "Writer ( s ) " TEXT, "Original Airdate" TEXT, "Production Code" FLOAT)

What is the production code of the episode titled, 'But there's Clay'?
SELECT MAX("Production Code") FROM table_516 WHERE "Title" = 'But There''s Clay'
SELECT MAX("Production Code") FROM "table_516" WHERE "Title" = 'But There\'s Clay'