Complex sentence: John Brown (Matthew Broderick) works as a security guard at the laboratory run by robotics scientist Brenda Bradford (Joely Fisher) and her father Artemus in Riverton, Ohio while wishing to join the Riverton Police Department, with support from his niece Penny.
Split into simpler sentences: John Brown (Matthew Broderick) works as a security guard at the laboratory run by robotics scientist Brenda Bradford (Joely Fisher) and her father Artemus in Riverton, Ohio. John wishes to join the Riverton Police Department, with support from his niece Penny.