[Brandon] was so excited to introduce his new girlfriend to his mother, [David]. [Brandon] is so excited that he gets to visit his aunt [Lena] this summer. [Cindy] and her sister [Lena] are the only children in their family.
('David', 'Cindy')
[Brandon] was so excited to introduce his new girlfriend to his mother, [David]. [Brandon] is so excited that he gets to visit his aunt [Lena] this summer. [Cindy] and her sister [Lena] are the only children in their family.
[{('David', 'sister', 'Cindy'): [('David', 'sister', 'Lena'), ('Lena', 'sister', 'Cindy')]}, {('David', 'sister', 'Lena'): [('David', 'son', 'Brandon'), ('Brandon', 'aunt', 'Lena')]}]
['son', 'aunt', 'sister']