[Bobby] tripped his brother [Johnson] in the living room. [Frances] was baking cookies for her grandson, [Michael]. [Michael]'s brother [Bobby] came home from school, so she baked some extra for him, too.
('Frances', 'Johnson')
[Frances] was baking cookies for her grandson, [Michael]. [Michael]'s brother [Bobby] came home from school, so she baked some extra for him, too. [Bobby] tripped his brother [Johnson] in the living room.
[{('Frances', 'grandson', 'Johnson'): [('Frances', 'grandson', 'Bobby'), ('Bobby', 'brother', 'Johnson')]}, {('Frances', 'grandson', 'Bobby'): [('Frances', 'grandson', 'Michael'), ('Michael', 'brother', 'Bobby')]}]
['grandson', 'brother', 'brother']