[David] was unhappy with her son, [Brandon], and his grades. She enlisted a tutor to help him. [Hugh] is the proud father of the lovely [Brandon] [Hugh] sent flowers to his mother [Frances] for Mother's Day.
('David', 'Frances')
[David] was unhappy with her son, [Brandon], and his grades. She enlisted a tutor to help him. [Hugh] is the proud father of the lovely [Brandon] [Hugh] sent flowers to his mother [Frances] for Mother's Day.
[{('David', 'mother', 'Frances'): [('David', 'son', 'Brandon'), ('Brandon', 'grandmother', 'Frances')]}, {('Brandon', 'grandmother', 'Frances'): [('Brandon', 'father', 'Hugh'), ('Hugh', 'mother', 'Frances')]}]
['son', 'father', 'mother']