[Keith] tripped his brother [Dale] in the living room. [Rich] had taken his son [Keith] to the batting cages to practice for his big game. While watching his son, [Rich] could n't help but think about when he used to go to the batting cages with his father [Scott].
('Scott', 'Dale')
[Rich] had taken his son [Keith] to the batting cages to practice for his big game. While watching his son, [Rich] could n't help but think about when he used to go to the batting cages with his father [Scott]. [Keith] tripped his brother [Dale] in the living room.
[{('Scott', 'grandson', 'Dale'): [('Scott', 'grandson', 'Keith'), ('Keith', 'brother', 'Dale')]}, {('Scott', 'grandson', 'Keith'): [('Scott', 'son', 'Rich'), ('Rich', 'son', 'Keith')]}]