[Frances] spent the day with her grandson [Charles]. They had a good time watching movies. [Charles]'s father, [Wesley], bought him some ice cream. [Wesley] went to pick up his son [Chris] from the baseball practice.
('Frances', 'Chris')
[Frances] spent the day with her grandson [Charles]. They had a good time watching movies. [Charles]'s father, [Wesley], bought him some ice cream. [Wesley] went to pick up his son [Chris] from the baseball practice.
[{('Frances', 'grandson', 'Chris'): [('Frances', 'grandson', 'Charles'), ('Charles', 'brother', 'Chris')]}, {('Charles', 'brother', 'Chris'): [('Charles', 'father', 'Wesley'), ('Wesley', 'son', 'Chris')]}]
['grandson', 'father', 'son']