[Ashley] took her grandson [Jeff] to his first day of school. [Nancy] took her son, [Jeff], to the movie theater for his birthday.
('Nancy', 'Ashley')
[Nancy] took her son, [Jeff], to the movie theater for his birthday. [Ashley] took her grandson [Jeff] to his first day of school.
[{('Nancy', 'mother', 'Ashley'): [('Nancy', 'son', 'Jeff'), ('Jeff', 'grandmother', 'Ashley')]}]
['son', 'grandmother']