[Ann] and her husband [Timothy] were working in the garden when [Lillian], [Ann]'s mother, came over and offered to help.
('Lillian', 'Timothy')
[Ann] and her husband [Timothy] were working in the garden when [Lillian], [Ann]'s mother, came over and offered to help.
[{('Lillian', 'son-in-law', 'Timothy'): [('Lillian', 'daughter', 'Ann'), ('Ann', 'husband', 'Timothy')]}]
['daughter', 'husband']