[John] loves to play baseball with his dad, [Robert]. [John] and his grandfather, [Harold], went to watch the ball game together. [Dorothy] loves painting with her father. His name is [Harold]. [Beverly]'s sister, [Dorothy], recently started acting.
('Robert', 'Beverly')
[John] loves to play baseball with his dad, [Robert]. [John] and his grandfather, [Harold], went to watch the ball game together. [Dorothy] loves painting with her father. His name is [Harold]. [Beverly]'s sister, [Dorothy], recently started acting.
[{('Robert', 'sister', 'Beverly'): [('Robert', 'father', 'Harold'), ('Harold', 'daughter', 'Beverly')]}, {('Harold', 'daughter', 'Beverly'): [('Harold', 'daughter', 'Dorothy'), ('Dorothy', 'sister', 'Beverly')]}, {('Robert', 'father', 'Harold'): [('Robert', 'son', 'John'), ('John', 'grandfather', 'Harold')]}]
['son', 'grandfather', 'daughter', 'sister']