[Dorothy] has been waiting around all day for her son, [Jeffrey]. [Pedro] lit the campfire with his sister [Tracy] while his son [Jeffrey] gathered wood. [Marie] took her sister [Tracy] out for dinner to celebrate her birthday.
('Dorothy', 'Marie')
[Dorothy] has been waiting around all day for her son, [Jeffrey]. [Pedro] lit the campfire with his sister [Tracy] while his son [Jeffrey] gathered wood. [Marie] took her sister [Tracy] out for dinner to celebrate her birthday.
[{('Dorothy', 'sister', 'Marie'): [('Dorothy', 'son', 'Jeffrey'), ('Jeffrey', 'aunt', 'Marie')]}, {('Jeffrey', 'aunt', 'Marie'): [('Jeffrey', 'father', 'Pedro'), ('Pedro', 'sister', 'Marie')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'sister', 'Marie')]}]
['son', 'father', 'sister', 'sister']