[Tracy] and her nephew [Mario] played the piano together. [Dorothy] and her sister [Tracy] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Marie] is going dancing at a club with her husband [Robert]. On his way there, [Robert] stops at his son [Mario]'s house for a quick visit.
('Marie', 'Dorothy')
[Marie] is going dancing at a club with her husband [Robert]. On his way there, [Robert] stops at his son [Mario]'s house for a quick visit. [Tracy] and her nephew [Mario] played the piano together. [Dorothy] and her sister [Tracy] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while.
[{('Marie', 'sister', 'Dorothy'): [('Marie', 'sister', 'Tracy'), ('Tracy', 'sister', 'Dorothy')]}, {('Marie', 'sister', 'Tracy'): [('Marie', 'son', 'Mario'), ('Mario', 'aunt', 'Tracy')]}, {('Marie', 'son', 'Mario'): [('Marie', 'husband', 'Robert'), ('Robert', 'son', 'Mario')]}]
['husband', 'son', 'aunt', 'sister']