[Lena] does n't like her brother [Hugh]. [Hugh] was happy that his son [Bobby] was doing well in college. [Bobby] plays piano so good that his grandfather [James] gifted him a new set this winter.
('Lena', 'James')
[Lena] does n't like her brother [Hugh]. [Hugh] was happy that his son [Bobby] was doing well in college. [Bobby] plays piano so good that his grandfather [James] gifted him a new set this winter.
[{('Lena', 'father', 'James'): [('Lena', 'brother', 'Hugh'), ('Hugh', 'father', 'James')]}, {('Hugh', 'father', 'James'): [('Hugh', 'son', 'Bobby'), ('Bobby', 'grandfather', 'James')]}]
['brother', 'son', 'grandfather']