CREATE TABLE table_3768 ("No." FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

How many people wrote the episode with a production code of 2j5507?
SELECT COUNT("Written by") FROM table_3768 WHERE "Production code" = '2J5507'
SELECT COUNT("Written by") FROM "table_3768" WHERE "Production code" = '2J5507'