[George] wanted his son, [Timothy], to go fishing with him. [April] was playing in the sandbox with her brother [Timothy].
('April', 'George')
[April] was playing in the sandbox with her brother [Timothy]. [George] wanted his son, [Timothy], to go fishing with him.
[{('April', 'father', 'George'): [('April', 'brother', 'Timothy'), ('Timothy', 'father', 'George')]}]
['brother', 'father']