[Tracy] has a son named [Kevin]. [Louis] does not know he has a son named [Paul]. [Tracy] is taking her nephew [Paul] out for dinner. [Pedro] invited his nephew, [Kevin] to the baseball game.
('Louis', 'Pedro')
[Louis] does not know he has a son named [Paul]. [Tracy] is taking her nephew [Paul] out for dinner. [Tracy] has a son named [Kevin]. [Pedro] invited his nephew, [Kevin] to the baseball game.
[{('Louis', 'brother', 'Pedro'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'brother', 'Pedro')]}, {('Tracy', 'brother', 'Pedro'): [('Tracy', 'son', 'Kevin'), ('Kevin', 'uncle', 'Pedro')]}, {('Louis', 'sister', 'Tracy'): [('Louis', 'son', 'Paul'), ('Paul', 'aunt', 'Tracy')]}]
['son', 'aunt', 'son', 'uncle']