[Tony] and his wife [Rosetta] went to a lovely anniversary dinner. [Tony]'s mother [Theresa] wanted to surprise him for his birthday, so she baked him a cake.
('Rosetta', 'Theresa')
[Tony] and his wife [Rosetta] went to a lovely anniversary dinner. [Tony]'s mother [Theresa] wanted to surprise him for his birthday, so she baked him a cake.
[{('Rosetta', 'mother-in-law', 'Theresa'): [('Rosetta', 'husband', 'Tony'), ('Tony', 'mother', 'Theresa')]}]
['husband', 'mother']