[Johnson] loves visiting his aunt [Lynn] over the weekends. [David] was unhappy with her son, [Johnson], and his grades. She enlisted a tutor to help him. [David] took her sister [Cindy] out for dinner to celebrate her birthday.
('Cindy', 'Lynn')
[David] took her sister [Cindy] out for dinner to celebrate her birthday. [David] was unhappy with her son, [Johnson], and his grades. She enlisted a tutor to help him. [Johnson] loves visiting his aunt [Lynn] over the weekends.
[{('Cindy', 'sister', 'Lynn'): [('Cindy', 'sister', 'David'), ('David', 'sister', 'Lynn')]}, {('David', 'sister', 'Lynn'): [('David', 'son', 'Johnson'), ('Johnson', 'aunt', 'Lynn')]}]
['sister', 'son', 'aunt']