xsd:string Two parties, the Exchangers, each give and receive from the other Themes. The parties are also construable separately as Exchanger_1 and Exchanger_2, in which case the Themes may be construed separately, too, as Theme_1 and Theme_2. They swapped the island with the Neapolitan government of the day for the much smaller Capri. Then the teams swapped their draftees. We exchanged addresses and he told us that next year when we are in Aruba we will visit with his family there. Notice that this frame is to be differentiated from the Replacing frame, where there is no notion of trade between two parties and the focus is only on the relationship between two items that successively fulfill a function or participate in a relation.