Question: What is the date of birth of Sergei Bubka (Tennis)'s father?
Sentence (from "Sergey Bubka"): He held the indoor world record of 6.15 meters, set on 21 February 1993 in Donetsk, Ukraine for almost 21 years until France's Renaud Lavillenie cleared 6.16 metres on 15 February 2014 at the same meet in the same arena.
Relevant evidence: No