With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mark Hamill has voiced characters in many video games since the 1990's.
text_B: Mark Richard Hamill -LRB- born September 25 , 1951 -RRB- is an American actor , voice actor , producer and writer .. voice actor. voice actor. He is best known for playing Luke Skywalker in the Star Wars film series .. Luke Skywalker. Luke Skywalker. Star Wars. Star Wars. His other works include Corvette Summer -LRB- 1978 -RRB- and The Big Red One -LRB- 1980 -RRB- , among other television shows and movies .. Corvette Summer. Corvette Summer. The Big Red One. The Big Red One. Hamill has also appeared on stage in several theater productions , primarily during the 1980s .. Hamill is a prolific voice actor who has voiced characters in many animated television shows , movies , and video games since the 1970s .. voice actor. voice actor. He is known for his long-standing role as DC Comics ' the Joker , commencing with Batman  : The Animated Series in 1992 .. the Joker. Joker ( comics )
related.