Protasis and apodosis avoid the issue entirely. It is the final part of a play, following the protasis, epitasis, and catastasis. In some contexts the antecedent is called the protasis. In a conditional, the protasis is a subordinate clause. Protasis of conditionals is one of the most common environments for polarity items. In drama, a protasis is the introductory part of a play, usually its first act.