question: What position at ABC did Thomas Murphy stay on for after stepping down as president?
sentence: Now at a strong second place, the network entered the 1990s with additional family-friendly hits 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 Strangers spinoff Family Matters, as well as series such as Doogie Howser, M.D., Life Goes On, cult favorite Twin Peaks and The Commish.