[John] borrowed some money from his sister [Constance]. [Mary] drove her son [John] to his soccer game.
('Mary', 'Constance')
[Mary] drove her son [John] to his soccer game. [John] borrowed some money from his sister [Constance].
[{('Mary', 'daughter', 'Constance'): [('Mary', 'son', 'John'), ('John', 'sister', 'Constance')]}]