Clarification on hindu succession rule

Facts of the case 1 - Mr. A acquired a piece of land post marriage ( year of marriage : 1965) . The property is registered in his name . Year of acquisition of land : 1993 2- Mr.A and Mrs A do not have any children 3- Mrs A died in June 1997 4- Mr. A died in December 1997 5- Mr A has two siblings . 1 brother & 1 sister. ( Siblings are alive ) 6 - Brother of Mr. A is married ( year of marriage - 1967). He has two children 7 - sister of Mr. A is married (year of marriage : 1963) . She has two children 8 - Mrs A has 4 siblings . 2 brothers & 2 sisters. Neither of them have children . ( Siblings are alive ) Note 1 - State where land is situated : Karnataka Note - 2 - Mr A , Mrs A and all siblings - born in Karnataka Question : 1 -who is the legal heir ? 2-Who will be entitled to the land ? 3- if it will be distributed between more than 1 person , in what proportions will it be done in ?