[Chris] and his grandfather, [James], went to the zoo, and had a great time together. [Chris] was so excited to introduce his new girlfriend to his mother, [Lena]. [James] is helping his son study. His name is [Hugh].
('Lena', 'Hugh')
[Chris] was so excited to introduce his new girlfriend to his mother, [Lena]. [Chris] and his grandfather, [James], went to the zoo, and had a great time together. [James] is helping his son study. His name is [Hugh].
[{('Lena', 'brother', 'Hugh'): [('Lena', 'father', 'James'), ('James', 'son', 'Hugh')]}, {('Lena', 'father', 'James'): [('Lena', 'son', 'Chris'), ('Chris', 'grandfather', 'James')]}]
['son', 'grandfather', 'son']