Rosenstone argues using examples (e.g. Walker, JFK and A Knight's Tale) that while filmic sequences, events or characters might not have actually existed/occurred, they can still have historical value if they operate on a metaphorical level to say something "true" about the past. What does he mean by this? Did the first two course films(breaker morant,le grand blanc de lambarene)do this? Answer using evidence from the first two films and supporting lecture and reading materials