[Marie] does n't like having to babysit her younger brother, [Louis]. [Louis] went to visit his sister [Tracy] to the hospital last week. [Tracy] and her sister [Beverly] are planning a surprise birthday party for [Harold], [Beverly]'s father.
('Marie', 'Harold')
[Marie] does n't like having to babysit her younger brother, [Louis]. [Louis] went to visit his sister [Tracy] to the hospital last week. [Tracy] and her sister [Beverly] are planning a surprise birthday party for [Harold], [Beverly]'s father.
[{('Marie', 'father', 'Harold'): [('Marie', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Marie', 'sister', 'Tracy'): [('Marie', 'brother', 'Louis'), ('Louis', 'sister', 'Tracy')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'sister', 'Beverly'), ('Beverly', 'father', 'Harold')]}]
['brother', 'sister', 'sister', 'father']