[Michelle]'s son [Tom] and son [Keith] went to the park together to play. [Rich] who is [Tom]'s father grounded [Tom] after finding out what [Tom] had done at school.
('Rich', 'Keith')
[Rich] who is [Tom]'s father grounded [Tom] after finding out what [Tom] had done at school. [Michelle]'s son [Tom] and son [Keith] went to the park together to play.
[{('Rich', 'son', 'Keith'): [('Rich', 'son', 'Tom'), ('Tom', 'brother', 'Keith')]}, {('Tom', 'brother', 'Keith'): [('Tom', 'mother', 'Michelle'), ('Michelle', 'son', 'Keith')]}]