Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: What martial arts does the man who Ken had a rivalry with after Jeff Jarrett participate in? Passage:After losing to Undertaker, Shamrock, Big Show, Mankind and Test formed The Union, a stable of wrestlers in opposition to the Corporate Ministry. The Union dissolved soon after defeating the Corporate Ministry at Over the Edge in May. Shamrock briefly feuded with Jeff Jarrett before beginning a rivalry with martial artist Steve Blackman that saw he and Blackman fight one another in a series of unorthodox matches. The feud ended at SummerSlam, where Shamrock defeated Blackman in a "Lion's Den weapons match". He went on to feud with the newly debuted Chris Jericho until departing the WWF in late 1999 in order to resume his mixed martial arts career. His departure was attributed on screen to an injury inflicted by Jericho's bodyguard, Mr. Hughes. Ken Shamrock has since appeared in the video games WWF SmackDown!,  (in Royal Rumble matches only), WWF No Mercy, WWE '13 and WWE 2K16.


b