[Joshua] and his wife [Lynn] made promise to help their son [Thomas]. [Thomas]'s brother [Joseph] is willing to help to.
('Lynn', 'Joseph')
[Joshua] and his wife [Lynn] made promise to help their son [Thomas]. [Thomas]'s brother [Joseph] is willing to help to.
[{('Lynn', 'son', 'Joseph'): [('Lynn', 'son', 'Thomas'), ('Thomas', 'brother', 'Joseph')]}, {('Thomas', 'brother', 'Joseph'): [('Thomas', 'father', 'Joshua'), ('Joshua', 'son', 'Joseph')]}]
['son', 'father', 'son']