[Frances] received a nice post card from her grandson [Theodore]. She did n't receive one from [Theodore]'s brother [Irvin], though. To find out why, she decided to ask [Irvin]'s father [Wesley].
('Wesley', 'Frances')
[Frances] received a nice post card from her grandson [Theodore]. She did n't receive one from [Theodore]'s brother [Irvin], though. To find out why, she decided to ask [Irvin]'s father [Wesley].
[{('Wesley', 'mother', 'Frances'): [('Wesley', 'son', 'Irvin'), ('Irvin', 'grandmother', 'Frances')]}, {('Irvin', 'grandmother', 'Frances'): [('Irvin', 'brother', 'Theodore'), ('Theodore', 'grandmother', 'Frances')]}]
['son', 'brother', 'grandmother']