[Shantel] took her grandson [Lizzie] to the zoo. He loved feeding the monkeys. [Marie]'s son [Mario] and daughter [Lizzie] helped [Mario]'s father [Robert] paint his house.
('Robert', 'Shantel')
[Marie]'s son [Mario] and daughter [Lizzie] helped [Mario]'s father [Robert] paint his house. [Shantel] took her grandson [Lizzie] to the zoo. He loved feeding the monkeys.
[{('Robert', 'mother', 'Shantel'): [('Robert', 'son', 'Mario'), ('Mario', 'grandmother', 'Shantel')]}, {('Mario', 'grandmother', 'Shantel'): [('Mario', 'sister', 'Lizzie'), ('Lizzie', 'grandmother', 'Shantel')]}, {('Mario', 'sister', 'Lizzie'): [('Mario', 'mother', 'Marie'), ('Marie', 'daughter', 'Lizzie')]}]
['son', 'mother', 'daughter', 'grandmother']