Elections to the Rajya Sabha are indirect; members those represents states are elected by elected members of legislative assemblies of the States comparatively with the system of proportional representation by means of the single transferable vote, STV, and those representing Union Territories are chosen in such manner as Parliament may by law prescribe. Parliament has empowered by the Indian Constitution to prescribe the manner of selecting the representatives of the union territories in the Lok Sabha. It has passed the Union Territories (i.e. Direct Election to the House of the People) Act, which provides that Lok Sabha members from the Union Territories will be selected by direct elections. The Indian Constitution provides that the Rajya Sabha shall comprise of 250 members, out of which 12 members shall be nominated by the President from amongst persons having specific knowledge or practical experience in respect of such matters like literature, science, art and social service; and not greater than 238 representatives of the States and the Union Territories. Some seats are reserved in Lok Sabha for the members of the Scheduled Castes & Scheduled Tribes. According to the order issued by the Delimitation Commission in the year 2008, 412 are general, 84 seats are reserved for Scheduled Castes and another 47 seats for the Scheduled Tribes.