[Dorothy] and her sister [Marie] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Tracy] cooked dinner for her son [Bobby] and her father [Harold]. [Dorothy] was playing tag with her father [Harold].
('Marie', 'Bobby')
[Dorothy] and her sister [Marie] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Dorothy] was playing tag with her father [Harold]. [Tracy] cooked dinner for her son [Bobby] and her father [Harold].
[{('Marie', 'nephew', 'Bobby'): [('Marie', 'sister', 'Tracy'), ('Tracy', 'son', 'Bobby')]}, {('Marie', 'sister', 'Tracy'): [('Marie', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Tracy')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'father', 'Harold'), ('Harold', 'daughter', 'Tracy')]}]
['sister', 'father', 'daughter', 'son']