[David] loves to make cookies for her son. His name is [Bobby]. [Michael]'s mother, [David], was calling him for dinner. [Michael] took his grandfather [James] to lunch at a local diner.
('James', 'Bobby')
[Michael] took his grandfather [James] to lunch at a local diner. [Michael]'s mother, [David], was calling him for dinner. [David] loves to make cookies for her son. His name is [Bobby].
[{('James', 'grandson', 'Bobby'): [('James', 'grandson', 'Michael'), ('Michael', 'brother', 'Bobby')]}, {('Michael', 'brother', 'Bobby'): [('Michael', 'mother', 'David'), ('David', 'son', 'Bobby')]}]
['grandson', 'mother', 'son']