S. 11: Property held for charitable purposes-General public utility-Sports-Applicability of proviso to section 2(15)-Specified person-Mutual Association-Association of persons-Sports facilities and charging members and non-members at differential rates-Orders were set aside and restored to the file of the Assessing Officer for de novo assessment after applying provisions of section 2(15) in light of the decision of the Supreme Court.[S. 2(15),2(31)(v), 4, 12A, 13(1)]