Name the Russian mixed martial artist who currently fights in the lightweight division of the UFC and is a training partner of Natalia Vitalyevna Vorobieva, a Russian wrestler who competed in the 2012 Summer Olympics?
Natalia Vorobieva: Natalia Vitalyevna Vorobieva (Russian: Наталья Витальевна Воробьёва ; born 27 May 1991 in Tulun, Irkutsk oblast, Russian SFSR, Soviet Union) is a Russian wrestler, who competed at the 2012 Summer Olympics.
i don't know