CREATE TABLE table_70904 ("Director ( s ) " TEXT, "Writer ( s ) " TEXT, "Recipient" TEXT, "Date" TEXT, "Award" TEXT)

Who was the writer when Parkville Pictures Ltd was the recipient?
SELECT "Writer(s)" FROM table_70904 WHERE "Recipient" = 'parkville pictures ltd'
SELECT "Writer(s)" FROM "table_70904" WHERE "Recipient" = 'parkville pictures ltd'