CREATE TABLE table_2878 ("#" FLOAT, "Title" TEXT, "Director" TEXT, "Writer ( s ) " TEXT, "Original air date" TEXT, "Production Code" TEXT, "U.S. viewers  ( millions ) " TEXT)

Who directed the episode written by Jason Yoshimura?
SELECT "Director" FROM table_2878 WHERE "Writer(s)" = 'Jason Yoshimura'
SELECT "Director" FROM "table_2878" WHERE "Writer(s)" = 'Jason Yoshimura'