CREATE TABLE table_77940 ("Player" TEXT, "Date of Birth" TEXT, "Batting Style" TEXT, "Bowling Style" TEXT, "First Class Team" TEXT)

When was roshan mahanama born?
SELECT "Date of Birth" FROM table_77940 WHERE "Player" = 'roshan mahanama'
SELECT "Date of Birth" FROM "table_77940" WHERE "Player" = 'roshan mahanama'