[Mary] is so proud of [Ann] who is the sister of her grandson. [Martha] wants to make a special meal for her daughter [Ann]'s birthday.
('Martha', 'Mary')
[Martha] wants to make a special meal for her daughter [Ann]'s birthday. [Mary] is so proud of [Ann] who is the sister of her grandson.
[{('Martha', 'mother', 'Mary'): [('Martha', 'daughter', 'Ann'), ('Ann', 'grandmother', 'Mary')]}]