[Marie] took her son [Mario] to school this morning because he missed the bus. [Marie] and her husband [Robert] shot fireworks with their son [Ronald]. [Ronald]'s brother [Allan] is afraid of fireworks.
('Allan', 'Mario')
[Marie] and her husband [Robert] shot fireworks with their son [Ronald]. [Ronald]'s brother [Allan] is afraid of fireworks. [Marie] took her son [Mario] to school this morning because he missed the bus.
[{('Allan', 'brother', 'Mario'): [('Allan', 'mother', 'Marie'), ('Marie', 'son', 'Mario')]}, {('Allan', 'mother', 'Marie'): [('Allan', 'brother', 'Ronald'), ('Ronald', 'mother', 'Marie')]}, {('Allan', 'brother', 'Ronald'): [('Allan', 'father', 'Robert'), ('Robert', 'son', 'Ronald')]}]
['father', 'son', 'mother', 'son']