[Frances]'s husband, [James], just went on tour. [James] took his grandson [Brandon] to the zoo. [Brandon]'s brother [Michael] went to the aquarium instead.
('Frances', 'Michael')
[Frances]'s husband, [James], just went on tour. [James] took his grandson [Brandon] to the zoo. [Brandon]'s brother [Michael] went to the aquarium instead.
[{('Frances', 'grandson', 'Michael'): [('Frances', 'grandson', 'Brandon'), ('Brandon', 'brother', 'Michael')]}, {('Frances', 'grandson', 'Brandon'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Brandon')]}]
['husband', 'grandson', 'brother']