[Rich] took [John] is brother home, he later visited his brother [Matthew] at the hospital. [Bret] bought a book for his father [John].
('Matthew', 'Bret')
[Rich] took [John] is brother home, he later visited his brother [Matthew] at the hospital. [Bret] bought a book for his father [John].
[{('Matthew', 'nephew', 'Bret'): [('Matthew', 'brother', 'John'), ('John', 'son', 'Bret')]}, {('Matthew', 'brother', 'John'): [('Matthew', 'brother', 'Rich'), ('Rich', 'brother', 'John')]}]