[Joshua]'s sister, [Lena], was so happy to have him home. He was home from college. [Lena] and her daughter [Pamela] are entering the competition together. [Pamela] went to visit her aunt, [David], who's birthday was yesterday.
('Joshua', 'David')
[Joshua]'s sister, [Lena], was so happy to have him home. He was home from college. [Lena] and her daughter [Pamela] are entering the competition together. [Pamela] went to visit her aunt, [David], who's birthday was yesterday.
[{('Joshua', 'sister', 'David'): [('Joshua', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}, {('Lena', 'sister', 'David'): [('Lena', 'daughter', 'Pamela'), ('Pamela', 'aunt', 'David')]}]
['sister', 'daughter', 'aunt']