[Harold] 'son [Louis] could not believe that his father bought him a coffee machine for his birthday. [Mario] loves playing hide and seek with his grandfather [Harold]. [Mario] played catch with his dad, [Robert] [Robert] wanted his son, [Ronald], to go fishing with him.
('Ronald', 'Louis')
[Robert] wanted his son, [Ronald], to go fishing with him. [Mario] played catch with his dad, [Robert] [Mario] loves playing hide and seek with his grandfather [Harold]. [Harold] 'son [Louis] could not believe that his father bought him a coffee machine for his birthday.
[{('Ronald', 'uncle', 'Louis'): [('Ronald', 'father', 'Robert'), ('Robert', 'brother', 'Louis')]}, {('Robert', 'brother', 'Louis'): [('Robert', 'father', 'Harold'), ('Harold', 'son', 'Louis')]}, {('Robert', 'father', 'Harold'): [('Robert', 'son', 'Mario'), ('Mario', 'grandfather', 'Harold')]}]
['father', 'son', 'grandfather', 'son']