[Pedro] and his daughter [Rebecca] went to see [Pedro]'s father [Harold] to see how he was feeling because he had been sick with the flu. [Harold] and his son [Robert] went to the skating rink. [Annie] and her sister [Rebecca] were fighting. They never fight long though, and they made up the next day.
('Robert', 'Annie')
[Harold] and his son [Robert] went to the skating rink. [Pedro] and his daughter [Rebecca] went to see [Pedro]'s father [Harold] to see how he was feeling because he had been sick with the flu. [Annie] and her sister [Rebecca] were fighting. They never fight long though, and they made up the next day.
[{('Robert', 'niece', 'Annie'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'daughter', 'Annie')]}, {('Pedro', 'daughter', 'Annie'): [('Pedro', 'daughter', 'Rebecca'), ('Rebecca', 'sister', 'Annie')]}, {('Robert', 'brother', 'Pedro'): [('Robert', 'father', 'Harold'), ('Harold', 'son', 'Pedro')]}]
['father', 'son', 'daughter', 'sister']