[Constance] took her son [Thomas] to the park for the afternoon. [Mary] took her daughter, [Constance], out to High Tea yesterday afternoon.
('Mary', 'Thomas')
[Mary] took her daughter, [Constance], out to High Tea yesterday afternoon. [Constance] took her son [Thomas] to the park for the afternoon.
[{('Mary', 'grandson', 'Thomas'): [('Mary', 'daughter', 'Constance'), ('Constance', 'son', 'Thomas')]}]