[Lizzie]'s father [Robert] and grandmother [Shantel] took [Robert]'s sister, [Dorothy], with them on their catamaran trip. [Shantel] takes her son [Antonio] to the park every Saturday.
('Dorothy', 'Antonio')
[Lizzie]'s father [Robert] and grandmother [Shantel] took [Robert]'s sister, [Dorothy], with them on their catamaran trip. [Shantel] takes her son [Antonio] to the park every Saturday.
[{('Dorothy', 'brother', 'Antonio'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'brother', 'Antonio')]}, {('Robert', 'brother', 'Antonio'): [('Robert', 'mother', 'Shantel'), ('Shantel', 'son', 'Antonio')]}, {('Robert', 'mother', 'Shantel'): [('Robert', 'daughter', 'Lizzie'), ('Lizzie', 'grandmother', 'Shantel')]}]
['brother', 'daughter', 'grandmother', 'son']