Question: Which film has the director who is older than the other, A Matter Of Fat or Trapped By Boston Blackie? 
Sentence (from "A Matter of Fat"): A Matter of Fat is a 1969 documentary film by William Weintraub chronicling the efforts of a 358- pound man, Gilles Lorrain, to lose half his body weight as part of a hospital supervised weight loss program.
Relevant evidence: Yes