[Johnson] asked his aunt [Lena] what college he should attend. [Frances] took her daughter, [David], out for pizza. [Johnson], [David]'s son, came too.
('Frances', 'Lena')
[Frances] took her daughter, [David], out for pizza. [Johnson], [David]'s son, came too. [Johnson] asked his aunt [Lena] what college he should attend.
[{('Frances', 'daughter', 'Lena'): [('Frances', 'daughter', 'David'), ('David', 'sister', 'Lena')]}, {('David', 'sister', 'Lena'): [('David', 'son', 'Johnson'), ('Johnson', 'aunt', 'Lena')]}]
['daughter', 'son', 'aunt']