[Mary] took her grandson [Michael] out for dinner on his birthday. [Roy]'s wife, [Mary] was hungry, so [Roy] cooked her her favorite meal.
('Roy', 'Michael')
[Roy]'s wife, [Mary] was hungry, so [Roy] cooked her her favorite meal. [Mary] took her grandson [Michael] out for dinner on his birthday.
[{('Roy', 'grandson', 'Michael'): [('Roy', 'wife', 'Mary'), ('Mary', 'grandson', 'Michael')]}]