[Joshua] was waiting patiently for his wife, [Lynn]. [Lynn]'s son, [Joseph], came over to her house for dinner. [Thomas], [Joseph]'s brother, came too.
('Joshua', 'Thomas')
[Joshua] was waiting patiently for his wife, [Lynn]. [Lynn]'s son, [Joseph], came over to her house for dinner. [Thomas], [Joseph]'s brother, came too.
[{('Joshua', 'son', 'Thomas'): [('Joshua', 'wife', 'Lynn'), ('Lynn', 'son', 'Thomas')]}, {('Lynn', 'son', 'Thomas'): [('Lynn', 'son', 'Joseph'), ('Joseph', 'brother', 'Thomas')]}]
['wife', 'son', 'brother']