Premise: A man in a gladiator costume is using his cellphone on a busy street.

Hypothesis: A guy is dressed and holding a cell phone outdoors.
Relation: entailment

Hypothesis: An actor already in costume is calling his agent on his cellphone for directions to the shoot.
Relation: neutral

Hypothesis: A little boy in a gladiator costume is trick-or-treating on a busy street.
Relation: contradiction