[Allan] is in the same grade as his sister [Michelle], but his sister [Elsie] is 2 years ahead of him. [Elsie]'s father, [Robert], was so proud to see her graduate. [Robert]'s father, [Harold], was glad to see him so happy.
('Michelle', 'Harold')
[Allan] is in the same grade as his sister [Michelle], but his sister [Elsie] is 2 years ahead of him. [Elsie]'s father, [Robert], was so proud to see her graduate. [Robert]'s father, [Harold], was glad to see him so happy.
[{('Michelle', 'grandfather', 'Harold'): [('Michelle', 'sister', 'Elsie'), ('Elsie', 'grandfather', 'Harold')]}, {('Elsie', 'grandfather', 'Harold'): [('Elsie', 'father', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Michelle', 'sister', 'Elsie'): [('Michelle', 'brother', 'Allan'), ('Allan', 'sister', 'Elsie')]}]
['brother', 'sister', 'father', 'father']