Quote
Originally posted by: motti_soL
se·quel n.
Something that follows; a continuation.
A literary, dramatic, or cinematic work whose narrative continues that of a preexisting work.
A result or consequence. See Synonyms at effect.
by this definition, i would say that it could go both ways.
Ah, but taken in context, it's not a sequel because the OT was made first. It did not "follow" any preexisting work because it was the preexisting work. ESB is a sequel to ANH. ROTJ is a sequel to both ANH and ESB. On the whole, the PT is a prequel to the OT.