[Tony] and his brother [Nicolas] went out for lunch. [Tony] had a burger, and [Nicolas] had a chicken sandwich. [Ashley] took her grandson [Tony] out for dinner on his birthday.
('Ashley', 'Nicolas')
[Ashley] took her grandson [Tony] out for dinner on his birthday. [Tony] and his brother [Nicolas] went out for lunch. [Tony] had a burger, and [Nicolas] had a chicken sandwich.
[{('Ashley', 'grandson', 'Nicolas'): [('Ashley', 'grandson', 'Tony'), ('Tony', 'brother', 'Nicolas')]}]
['grandson', 'brother']