[Clarence] went to his daughter [Lillian]'s house, to have lunch with her son [Timothy].
('Timothy', 'Clarence')
[Clarence] went to his daughter [Lillian]'s house, to have lunch with her son [Timothy].
[{('Timothy', 'grandfather', 'Clarence'): [('Timothy', 'mother', 'Lillian'), ('Lillian', 'father', 'Clarence')]}]
['mother', 'father']