Question: When was the American professional mixed martial artist born who is ranked #13 as of July 21, 2017 and also a trainee of Matt Hume?
Sentence (from "Mariusz Linke"): Linke is currently in talks with top Polish promotion Konfrontacja Sztuk Walki to negotiate a 2 fight contract to close out his mixed martial arts career by the end of 2015, Linke has stated despite retiring from fighting he will still continue his grappling career and is rumored to be in the 2014 ADCC Polish Trials to enter the 2015 ADCC World Championship.
Relevant evidence: No