[Constance] and her sister [Martha] played golf together. [Constance] won easily. [Martha]'s father [Roy] is taking her to a movie because she got good grades.
('Roy', 'Constance')
[Martha]'s father [Roy] is taking her to a movie because she got good grades. [Constance] and her sister [Martha] played golf together. [Constance] won easily.
[{('Roy', 'daughter', 'Constance'): [('Roy', 'daughter', 'Martha'), ('Martha', 'sister', 'Constance')]}]