[James] and his brother [Nicolas] are looking for a good gift for [Nicolas]'s mother [Theresa].
('Theresa', 'James')
[James] and his brother [Nicolas] are looking for a good gift for [Nicolas]'s mother [Theresa].
[{('Theresa', 'son', 'James'): [('Theresa', 'son', 'Nicolas'), ('Nicolas', 'brother', 'James')]}]
['son', 'brother']