[Mary] took her granddaughter [Margaret] to the movies. [Margaret] loved superhero films. [Roy] took his wife [Mary] to the new restaurant for dinner last Saturday.
('Roy', 'Margaret')
[Roy] took his wife [Mary] to the new restaurant for dinner last Saturday. [Mary] took her granddaughter [Margaret] to the movies. [Margaret] loved superhero films.
[{('Roy', 'granddaughter', 'Margaret'): [('Roy', 'wife', 'Mary'), ('Mary', 'granddaughter', 'Margaret')]}]