[Ronald] plays piano so good that his grandfather [Harold] gifted him a new set this winter. [Ronald] was so excited to introduce his new girlfriend to his mother, [Marie]. [Antonio] went to the game with his son [Kevin] and his father [Harold]
('Marie', 'Kevin')
[Ronald] was so excited to introduce his new girlfriend to his mother, [Marie]. [Ronald] plays piano so good that his grandfather [Harold] gifted him a new set this winter. [Antonio] went to the game with his son [Kevin] and his father [Harold]
[{('Marie', 'nephew', 'Kevin'): [('Marie', 'brother', 'Antonio'), ('Antonio', 'son', 'Kevin')]}, {('Marie', 'brother', 'Antonio'): [('Marie', 'father', 'Harold'), ('Harold', 'son', 'Antonio')]}, {('Marie', 'father', 'Harold'): [('Marie', 'son', 'Ronald'), ('Ronald', 'grandfather', 'Harold')]}]
['son', 'grandfather', 'son', 'son']