[Pedro] was upset at his daughter [Rebecca] for staying out so late. [Tracy] was disappointed when her father, [Harold] did not allow her to sleep over with her friends. [Louis] and his sister [Tracy] are going for a walk. [Louis] hit his brother [Pedro] in the head.
('Rebecca', 'Harold')
[Pedro] was upset at his daughter [Rebecca] for staying out so late. [Louis] hit his brother [Pedro] in the head. [Louis] and his sister [Tracy] are going for a walk. [Tracy] was disappointed when her father, [Harold] did not allow her to sleep over with her friends.
[{('Rebecca', 'grandfather', 'Harold'): [('Rebecca', 'father', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'brother', 'Louis'), ('Louis', 'father', 'Harold')]}, {('Louis', 'father', 'Harold'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}]
['father', 'brother', 'sister', 'father']