[Scott] wanted his son, [Rich], to go fishing with him. [Tom] and [Keith] are brothers who look nothing alike. [Rich] bought a book for his son [Tom].
('Keith', 'Scott')
[Tom] and [Keith] are brothers who look nothing alike. [Rich] bought a book for his son [Tom]. [Scott] wanted his son, [Rich], to go fishing with him.
[{('Keith', 'grandfather', 'Scott'): [('Keith', 'brother', 'Tom'), ('Tom', 'grandfather', 'Scott')]}, {('Tom', 'grandfather', 'Scott'): [('Tom', 'father', 'Rich'), ('Rich', 'father', 'Scott')]}]