[Irvin] and his father [Wesley] went jogging by the lake. [Cindy] called [Lynn], her sister, to see if she wanted to go out to eat. [Irvin] invited his Aunt [Lynn] to come to his graduation party.
('Wesley', 'Cindy')
[Irvin] and his father [Wesley] went jogging by the lake. [Irvin] invited his Aunt [Lynn] to come to his graduation party. [Cindy] called [Lynn], her sister, to see if she wanted to go out to eat.
[{('Wesley', 'sister', 'Cindy'): [('Wesley', 'sister', 'Lynn'), ('Lynn', 'sister', 'Cindy')]}, {('Wesley', 'sister', 'Lynn'): [('Wesley', 'son', 'Irvin'), ('Irvin', 'aunt', 'Lynn')]}]
['son', 'aunt', 'sister']