[Hugh] invited his nephew [Charles] to go hunting with him on Saturday. [Charles] said he would love to go with him. [Martha] loves her mother, [Lena]. [Lena]'s son, [Charles], feels the same way.
('Martha', 'Hugh')
[Martha] loves her mother, [Lena]. [Lena]'s son, [Charles], feels the same way. [Hugh] invited his nephew [Charles] to go hunting with him on Saturday. [Charles] said he would love to go with him.
[{('Martha', 'uncle', 'Hugh'): [('Martha', 'mother', 'Lena'), ('Lena', 'brother', 'Hugh')]}, {('Lena', 'brother', 'Hugh'): [('Lena', 'son', 'Charles'), ('Charles', 'uncle', 'Hugh')]}]
['mother', 'son', 'uncle']