[Mario] was happy to watch the hockey game with his father [Robert] and his uncle [Louis]. [Louis] was happy as well, but could n't help but wish that his sister [Dorothy] would be able to join them. [Dorothy] took her father [Harold] out for his birthday. They had a wonderful time.
('Mario', 'Harold')
[Mario] was happy to watch the hockey game with his father [Robert] and his uncle [Louis]. [Louis] was happy as well, but could n't help but wish that his sister [Dorothy] would be able to join them. [Dorothy] took her father [Harold] out for his birthday. They had a wonderful time.
[{('Mario', 'grandfather', 'Harold'): [('Mario', 'father', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Robert', 'father', 'Harold'): [('Robert', 'sister', 'Dorothy'), ('Dorothy', 'father', 'Harold')]}, {('Robert', 'sister', 'Dorothy'): [('Robert', 'brother', 'Louis'), ('Louis', 'sister', 'Dorothy')]}]
['father', 'brother', 'sister', 'father']