[Louis] went to the game with his son [Paul] and his father [Harold] [Tracy] invited her nephew, [Paul], over for dinner. [Dorothy] and her sister [Tracy] are the only children in their family.
('Harold', 'Dorothy')
[Louis] went to the game with his son [Paul] and his father [Harold] [Tracy] invited her nephew, [Paul], over for dinner. [Dorothy] and her sister [Tracy] are the only children in their family.
[{('Harold', 'daughter', 'Dorothy'): [('Harold', 'son', 'Louis'), ('Louis', 'sister', 'Dorothy')]}, {('Louis', 'sister', 'Dorothy'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'sister', 'Dorothy')]}, {('Louis', 'sister', 'Tracy'): [('Louis', 'son', 'Paul'), ('Paul', 'aunt', 'Tracy')]}]
['son', 'son', 'aunt', 'sister']