[Heidi]'s brother [Robert] and her went to get ice cream. [Wayne] 'son [Robert] could not believe that his father bought him a coffee machine for his birthday.
('Wayne', 'Heidi')
[Wayne] 'son [Robert] could not believe that his father bought him a coffee machine for his birthday. [Heidi]'s brother [Robert] and her went to get ice cream.
[{('Wayne', 'daughter', 'Heidi'): [('Wayne', 'son', 'Robert'), ('Robert', 'sister', 'Heidi')]}]
['son', 'sister']