CREATE TABLE table_20710 ("Number in series" FLOAT, "Broadcast Order" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original airdate" TEXT, "Production Code" FLOAT)

Who wrote the episode for s02 e07?
SELECT "Written by" FROM table_20710 WHERE "Broadcast Order" = 'S02 E07'
SELECT "Written by" FROM "table_20710" WHERE "Broadcast Order" = 'S02 E07'