    Sentence 1: What position at ABC did  Thomas Murphy stay on for after  stepping down as president?    Sentence 2: Now at a strong second  place, the network entered the 1990s  with additional family-friendly _ his  including America's Funniest Home  Videos (which has gone on to become  the longest-running prime __ time  entertainment program in the network's  history), Step by Step, Hangin' with Mr.  Cooper, Boy Meets World and Perfect