[Pedro] went to pick up his son [Jeffrey] from the baseball practice. [Jeffrey] visited his aunt [Tracy]. [Dorothy] asked her two sisters [Beverly] and [Tracy] if they were free for coffee this coming weekend.
('Pedro', 'Beverly')
[Pedro] went to pick up his son [Jeffrey] from the baseball practice. [Jeffrey] visited his aunt [Tracy]. [Dorothy] asked her two sisters [Beverly] and [Tracy] if they were free for coffee this coming weekend.
[{('Pedro', 'sister', 'Beverly'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'sister', 'Beverly')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'aunt', 'Tracy')]}, {('Tracy', 'sister', 'Beverly'): [('Tracy', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Beverly')]}]
['son', 'aunt', 'sister', 'sister']