[Dennis] went shopping with his wife, [Emily], for a present. His mom, [Amy], had a birthday coming up.
('Emily', 'Amy')
[Dennis] went shopping with his wife, [Emily], for a present. His mom, [Amy], had a birthday coming up.
[{('Emily', 'mother-in-law', 'Amy'): [('Emily', 'husband', 'Dennis'), ('Dennis', 'mother', 'Amy')]}]
['husband', 'mother']