[Ann] and her mother [Lillian] went shopping for [Ann]'s husband [Timothy]'s birthday.
('Timothy', 'Lillian')
[Ann] and her mother [Lillian] went shopping for [Ann]'s husband [Timothy]'s birthday.
[{('Timothy', 'mother-in-law', 'Lillian'): [('Timothy', 'wife', 'Ann'), ('Ann', 'mother', 'Lillian')]}]
['wife', 'mother']