[Roy]'s wife, [Mary] was hungry, so [Roy] cooked her her favorite meal. [Lois] and her mother [Mary] attended a play at the theater.
('Roy', 'Lois')
[Roy]'s wife, [Mary] was hungry, so [Roy] cooked her her favorite meal. [Lois] and her mother [Mary] attended a play at the theater.
[{('Roy', 'daughter', 'Lois'): [('Roy', 'wife', 'Mary'), ('Mary', 'daughter', 'Lois')]}]