Q: Context: Planet of the Apes is an American science fiction media franchise consisting of films, books, television series, comics, and other media about a world in which humans and intelligent apes clash for control. The franchise is based on French author Pierre Boulle's 1963 novel La Planete des singes, translated into English as Planet of the Apes or Monkey Planet. Its 1968 film adaptation, Planet of the Apes, was a critical and commercial hit, initiating a series of sequels, tie-ins, and derivative works. Arthur P. Jacobs produced the first five Apes films through APJAC Productions for distributor 20th Century Fox; since his death in 1973, Fox has controlled the franchise.

Question: when did planet of the apes first come out? Let's give stream of consciousness first:
The relevant sentence in the passage is: Its 1968 film adaptation, Planet of the Apes, was a critical and commercial hit, initiating a series of sequels, tie-ins, and derivative works. Therefore, the final answer is 1968.