[Travis] and his brother [Tony] fight a lot. Despite this, they still love each other very much. [Travis]'s mother [Theresa] wanted to surprise him for his birthday, so she baked him a cake.
('Tony', 'Theresa')
[Travis] and his brother [Tony] fight a lot. Despite this, they still love each other very much. [Travis]'s mother [Theresa] wanted to surprise him for his birthday, so she baked him a cake.
[{('Tony', 'mother', 'Theresa'): [('Tony', 'brother', 'Travis'), ('Travis', 'mother', 'Theresa')]}]
['brother', 'mother']