[Lena] went with her brother [Hugh] and her son [Pamela] to Sanibel Beach last weekend; they had a great time swimming and getting a nice tan. [Hugh] wanted to buy his mother, [Frances], a birthday present. But he did n't know what to get her.
('Pamela', 'Frances')
[Lena] went with her brother [Hugh] and her son [Pamela] to Sanibel Beach last weekend; they had a great time swimming and getting a nice tan. [Hugh] wanted to buy his mother, [Frances], a birthday present. But he did n't know what to get her.
[{('Pamela', 'grandmother', 'Frances'): [('Pamela', 'mother', 'Lena'), ('Lena', 'mother', 'Frances')]}, {('Lena', 'mother', 'Frances'): [('Lena', 'brother', 'Hugh'), ('Hugh', 'mother', 'Frances')]}]
['mother', 'brother', 'mother']