Question: Ekaterina Vandaryeva defeated which Polish MMA fighter in a controversial win in 2011?
Sentence (from "Ekaterina Vandaryeva"): Ekaterina Vandaryeva (born January 20, 1991) is a Belarusian kickboxer who defeated future UFC champion Joanna Jędrzejczyk in a controversial judges' decision to become the WKN champion in 2011.
Relevant evidence: Yes