[Roy]'s daughter, [Constance], is having some trouble. Her son, [Thomas], is n't doing well in school.
('Roy', 'Thomas')
[Roy]'s daughter, [Constance], is having some trouble. Her son, [Thomas], is n't doing well in school.
[{('Roy', 'grandson', 'Thomas'): [('Roy', 'daughter', 'Constance'), ('Constance', 'son', 'Thomas')]}]