[Robert] and his wife [Lorraine] got married in Spain. [Nancy] took her daughter [Lorraine] to see a movie on Friday. She let her pick the movie and she enjoyed it very much.
('Robert', 'Nancy')
[Robert] and his wife [Lorraine] got married in Spain. [Nancy] took her daughter [Lorraine] to see a movie on Friday. She let her pick the movie and she enjoyed it very much.
[{('Robert', 'mother-in-law', 'Nancy'): [('Robert', 'wife', 'Lorraine'), ('Lorraine', 'mother', 'Nancy')]}]
['wife', 'mother']