Complex sentence: Mehdi Khelaifia (born March 13,1985 in Algeria) is an Algerian footballer who is formerly playing as a defender for Atlantis FC in the Finnish Ykkönen.
Split into simpler sentences: Mehdi Khelaifia (born March 13,1985 in Algeria) is an Algerian footballer. He formerly played as a defender for Atlantis FC in the Finnish Ykkönen.