context: At least six individuals are on a team wearing helmets and knee pads while rollerblading around a skating rink.
hypothesis: Chances are about even that people are skating in a park for fun.
valid_hypothesis: Chances are about even that people are skating in a park for fun.
invalid_hypothesis: It is highly unlikely that people are skating in a park for fun.
hypothesis_assertion: People are skating in a park for fun.