sentences:  Other successful athletes at the Olympics and doing well in the World Championships and World Cup competitions are local born speed skaters Semion Elistratov, Vladimir Grigorev, Dmitry Migunov, Sofia Prosvirnova, Tatiana Borodulina Viktoriya Troytskaya, and Ruslan Zakharov.Other winter sports the Soviets or Russia have been strong in are bobsleigh, skeleton and luge.Basketball is a popular sport in Russia.