[Wayne] is [Heidi]'s father and [Clarence] is [Wayne]'s father. They all live together in the same house.
('Heidi', 'Clarence')
[Wayne] is [Heidi]'s father and [Clarence] is [Wayne]'s father. They all live together in the same house.
[{('Heidi', 'grandfather', 'Clarence'): [('Heidi', 'father', 'Wayne'), ('Wayne', 'father', 'Clarence')]}]
['father', 'father']