[Robert]'s son [Mario] and [Mario]'s grandmother [Shantel] are playing cards. [Ronald]'s father, [Robert], recently had a falling out with each other. [Allan] and his brother [Ronald] were playing tag in the park.
('Allan', 'Shantel')
[Allan] and his brother [Ronald] were playing tag in the park. [Ronald]'s father, [Robert], recently had a falling out with each other. [Robert]'s son [Mario] and [Mario]'s grandmother [Shantel] are playing cards.
[{('Allan', 'grandmother', 'Shantel'): [('Allan', 'father', 'Robert'), ('Robert', 'mother', 'Shantel')]}, {('Robert', 'mother', 'Shantel'): [('Robert', 'son', 'Mario'), ('Mario', 'grandmother', 'Shantel')]}, {('Allan', 'father', 'Robert'): [('Allan', 'brother', 'Ronald'), ('Ronald', 'father', 'Robert')]}]
['brother', 'father', 'son', 'grandmother']