[Thomas] got his brother [Joseph] and sister [Dolores] together for a fun game of catch. [James], [Joseph]'s grandfather, sat on the porch and watched.
('Dolores', 'James')
[Thomas] got his brother [Joseph] and sister [Dolores] together for a fun game of catch. [James], [Joseph]'s grandfather, sat on the porch and watched.
[{('Dolores', 'grandfather', 'James'): [('Dolores', 'brother', 'Thomas'), ('Thomas', 'grandfather', 'James')]}, {('Thomas', 'grandfather', 'James'): [('Thomas', 'brother', 'Joseph'), ('Joseph', 'grandfather', 'James')]}]
['brother', 'brother', 'grandfather']