[Michael]'s mother, [David], and brother, [Bobby], sat out with him on the porch to have breakfast. [Bobby] and his grandfather, [James], went to watch the ball game together.
('David', 'James')
[Michael]'s mother, [David], and brother, [Bobby], sat out with him on the porch to have breakfast. [Bobby] and his grandfather, [James], went to watch the ball game together.
[{('David', 'father', 'James'): [('David', 'son', 'Bobby'), ('Bobby', 'grandfather', 'James')]}, {('David', 'son', 'Bobby'): [('David', 'son', 'Michael'), ('Michael', 'brother', 'Bobby')]}]
['son', 'brother', 'grandfather']