Converse antonyms describe the same relation or activity from different per-spectives, and. follow patterns like: if X is p to Y, then Y is q to X, Sometimes one needs to make adjustments to this test pattern in order to form a grammatical sentence, as the examples in (1.8) show. For example since Bill (X) is a parent (p) to Madeline (Y), Madeline (Y) is a child (q) of Bill's (X). In other Words, Bill and Madeline have a relationship, and Bill's position in the relationship is parent, and Madeline's is child.