Question: In what year was the oldest partner of the 2015 Russian national champion ice dancers born?
Sentence (from "Sergey Mozgov"): With former partner Anna Yanovskaya, he is the 2015 World Junior champion, two-time (2013, 2014) JGP Final champion, the 2012 Youth Olympics champion, the 2014 World Junior silver medalist, and the 2015 Russian junior national champion.
Relevant evidence: No