[Joshua] is a factory worker. He has a wonderful sister by the name of [Lena]. [Lena]'s daughter, [Tina], asked her mom to read her a story. [David] is coming to New York to visit her niece, [Tina].
('Joshua', 'David')
[Joshua] is a factory worker. He has a wonderful sister by the name of [Lena]. [Lena]'s daughter, [Tina], asked her mom to read her a story. [David] is coming to New York to visit her niece, [Tina].
[{('Joshua', 'sister', 'David'): [('Joshua', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}, {('Lena', 'sister', 'David'): [('Lena', 'daughter', 'Tina'), ('Tina', 'aunt', 'David')]}]
['sister', 'daughter', 'aunt']