a subtype of parallel contrast in which the predicates in the two propositions have opposite meanings, while other parallel components of the proposition are members of posets. Example: in We will give our daughters to you and we will take your daughters for ourselves, the verbs 'give' and 'take' have opposite meanings, and the other parallel parts of the two propositions that differ form the posets {our daughters, your daughters} and {you, ourselves}. (Section 11.4.1)