[Tracy] is coming to New York to visit her niece, [Heather]. [Pedro] loves his daughter [Heather]. [Harold] was playing catch with his son, [Louis]. [Tracy] imitated her brother throwing the ball back and forth.
('Pedro', 'Harold')
[Pedro] loves his daughter [Heather]. [Tracy] is coming to New York to visit her niece, [Heather]. [Harold] was playing catch with his son, [Louis]. [Tracy] imitated her brother throwing the ball back and forth.
[{('Pedro', 'father', 'Harold'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'brother', 'Louis'), ('Louis', 'father', 'Harold')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'aunt', 'Tracy')]}]
['daughter', 'aunt', 'brother', 'father']