[Laura] invited her father [Antonio] to dinner. [Laura] asked [Harold], her grandfather, for some candy. [Antonio] 'son [Bernardo] could not believe that his father bought him a coffee machine for his birthday. [Bernardo]'s dad [Antonio] is the CEO of the company.
('Antonio', 'Harold')
[Antonio] 'son [Bernardo] could not believe that his father bought him a coffee machine for his birthday. [Bernardo]'s dad [Antonio] is the CEO of the company. [Laura] invited her father [Antonio] to dinner. [Laura] asked [Harold], her grandfather, for some candy.
[{('Antonio', 'father', 'Harold'): [('Antonio', 'son', 'Bernardo'), ('Bernardo', 'grandfather', 'Harold')]}, {('Bernardo', 'grandfather', 'Harold'): [('Bernardo', 'sister', 'Laura'), ('Laura', 'grandfather', 'Harold')]}, {('Bernardo', 'sister', 'Laura'): [('Bernardo', 'father', 'Antonio'), ('Antonio', 'daughter', 'Laura')]}]
['son', 'father', 'daughter', 'grandfather']