[David] likes baking brownies for her son [Michael]. [David]'s son [Bobby] ca n't have any because he is dieting. [Bobby] and his brother [Johnson] went to the movies. [Bobby] wanted to see an action movie, but [Johnson] convinced him to go to a horror film instead.
('Johnson', 'Michael')
[Bobby] and his brother [Johnson] went to the movies. [Bobby] wanted to see an action movie, but [Johnson] convinced him to go to a horror film instead. [David] likes baking brownies for her son [Michael]. [David]'s son [Bobby] ca n't have any because he is dieting.
[{('Johnson', 'brother', 'Michael'): [('Johnson', 'mother', 'David'), ('David', 'son', 'Michael')]}, {('Johnson', 'mother', 'David'): [('Johnson', 'brother', 'Bobby'), ('Bobby', 'mother', 'David')]}]
['brother', 'mother', 'son']