[Marie] and her husband [Robert] will be celebrating 30 years of marriage this month. [Harold] is [Mario]'s grandfather. [Mario] likes to go fishing with his grandfather. [Robert] watched his son [Ronald] play catch. [Ronald] tossed the ball back and fourth with his brother [Mario].
('Marie', 'Harold')
[Marie] and her husband [Robert] will be celebrating 30 years of marriage this month. [Robert] watched his son [Ronald] play catch. [Ronald] tossed the ball back and fourth with his brother [Mario]. [Harold] is [Mario]'s grandfather. [Mario] likes to go fishing with his grandfather.
[{('Marie', 'father', 'Harold'): [('Marie', 'son', 'Mario'), ('Mario', 'grandfather', 'Harold')]}, {('Marie', 'son', 'Mario'): [('Marie', 'son', 'Ronald'), ('Ronald', 'brother', 'Mario')]}, {('Marie', 'son', 'Ronald'): [('Marie', 'husband', 'Robert'), ('Robert', 'son', 'Ronald')]}]
['husband', 'son', 'brother', 'grandfather']