[Pamela] needed to go to the store. [Pamela] asked her sister [Martha] for a ride. [Tina] and her sister [Martha] went with [Tina]'s grandmother [Frances] to the craft store to get knitting materials last weekend.
('Frances', 'Pamela')
[Tina] and her sister [Martha] went with [Tina]'s grandmother [Frances] to the craft store to get knitting materials last weekend. [Pamela] needed to go to the store. [Pamela] asked her sister [Martha] for a ride.
[{('Frances', 'granddaughter', 'Pamela'): [('Frances', 'granddaughter', 'Martha'), ('Martha', 'sister', 'Pamela')]}, {('Frances', 'granddaughter', 'Martha'): [('Frances', 'granddaughter', 'Tina'), ('Tina', 'sister', 'Martha')]}]
['granddaughter', 'sister', 'sister']