[Harold] made a grilled cheese for his son [Louis]. [Louis]'s brother [Robert] ate a salad. [Antonio] invited his nephew [Allan] to go hunting with him on Saturday. [Allan] said he would love to go with him. [Allan] played catch with his dad, [Robert]
('Harold', 'Antonio')
[Harold] made a grilled cheese for his son [Louis]. [Louis]'s brother [Robert] ate a salad. [Allan] played catch with his dad, [Robert] [Antonio] invited his nephew [Allan] to go hunting with him on Saturday. [Allan] said he would love to go with him.
[{('Harold', 'son', 'Antonio'): [('Harold', 'son', 'Robert'), ('Robert', 'brother', 'Antonio')]}, {('Robert', 'brother', 'Antonio'): [('Robert', 'son', 'Allan'), ('Allan', 'uncle', 'Antonio')]}, {('Harold', 'son', 'Robert'): [('Harold', 'son', 'Louis'), ('Louis', 'brother', 'Robert')]}]
['son', 'brother', 'son', 'uncle']