[Emily] and her mother [Amy] planned a surprise birthday party for [Emily]'s husband [Dennis].
('Dennis', 'Amy')
[Emily] and her mother [Amy] planned a surprise birthday party for [Emily]'s husband [Dennis].
[{('Dennis', 'mother-in-law', 'Amy'): [('Dennis', 'wife', 'Emily'), ('Emily', 'mother', 'Amy')]}]
['wife', 'mother']