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 rollerblading for something to do.
valid_hypothesis: Chances are about even that people are rollerblading for something to do.
invalid_hypothesis: There is almost no chance that people are rollerblading for something to do.
hypothesis_assertion: People are rollerblading for something to do.