[Robert] wanted his son, [Ronald], to go fishing with him. [Angelica] does n't like her brother [Ronald]. [Robert] is an engineer who loves to take his son [Allan] to the science museum to help him learn about the world [Angelica] and her mother [Marie] went to volunteer at the homeless shelter last weekend.
('Marie', 'Allan')
[Angelica] and her mother [Marie] went to volunteer at the homeless shelter last weekend. [Angelica] does n't like her brother [Ronald]. [Robert] wanted his son, [Ronald], to go fishing with him. [Robert] is an engineer who loves to take his son [Allan] to the science museum to help him learn about the world
[{('Marie', 'son', 'Allan'): [('Marie', 'daughter', 'Angelica'), ('Angelica', 'brother', 'Allan')]}, {('Angelica', 'brother', 'Allan'): [('Angelica', 'brother', 'Ronald'), ('Ronald', 'brother', 'Allan')]}, {('Ronald', 'brother', 'Allan'): [('Ronald', 'father', 'Robert'), ('Robert', 'son', 'Allan')]}]
['daughter', 'brother', 'father', 'son']