[Hugh] is taking his son [Brandon] on a camping trip for the weekend. [Lynn]'s brother [Hugh] and her went to get ice cream. [David] and her son [Brandon] went to the zoo and then out to dinner yesterday.
('David', 'Lynn')
[David] and her son [Brandon] went to the zoo and then out to dinner yesterday. [Hugh] is taking his son [Brandon] on a camping trip for the weekend. [Lynn]'s brother [Hugh] and her went to get ice cream.
[{('David', 'sister', 'Lynn'): [('David', 'son', 'Brandon'), ('Brandon', 'aunt', 'Lynn')]}, {('Brandon', 'aunt', 'Lynn'): [('Brandon', 'father', 'Hugh'), ('Hugh', 'sister', 'Lynn')]}]
['son', 'father', 'sister']