[Harold] and his daughter [Tracy] are planning a trip to the mountains. They have n't been in almost 10 years. [Dorothy] and [Pedro] took their son [Jerome] to the park. [Jerome] was very excited, because he knew his grandfather, [Harold], would be meeting them there.
('Pedro', 'Tracy')
[Dorothy] and [Pedro] took their son [Jerome] to the park. [Jerome] was very excited, because he knew his grandfather, [Harold], would be meeting them there. [Harold] and his daughter [Tracy] are planning a trip to the mountains. They have n't been in almost 10 years.
[{('Pedro', 'sister', 'Tracy'): [('Pedro', 'father', 'Harold'), ('Harold', 'daughter', 'Tracy')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'son', 'Jerome'), ('Jerome', 'grandfather', 'Harold')]}, {('Pedro', 'son', 'Jerome'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'son', 'Jerome')]}]
['wife', 'son', 'grandfather', 'daughter']