Complex sentence: Claremont comes up with a plan to get the money by setting up the robbery of $10 million from Drake Bishop (Dabney Coleman), the billionaire owner of the Stratosphere Hotel and Casino in Las Vegas and a client of Claremont's armored car business.
Split into simpler sentences: Claremont comes up with a plan to get the money by setting up a robbery of Drake Bishop of $10 million. Bishop is the billionaire owner of the Stratosphere Hotel and Casino in Las Vegas and a client of Claremont's armored car business.