CREATE TABLE table_41744 ("Position" TEXT, "Jersey #" FLOAT, "Name" TEXT, "Height  ( cm ) " FLOAT, "Weight  ( kg ) " FLOAT, "Birthdate" TEXT, "Birthplace" TEXT, "2002\\u20132003 Team" TEXT, "NHL rights ,  if any" TEXT)

What is that if the weight for the play born on June 2, 1983?
SELECT SUM("Weight (kg)") FROM table_41744 WHERE "Birthdate" = 'june 2, 1983'
SELECT SUM("Weight (kg)") FROM "table_41744" WHERE "Birthdate" = 'june 2, 1983'