[Robert] always enjoyed playing with his sister, [Tracy], when they were growing up. [Harold] is the loving father of a beautiful girl named [Tracy]. [Cheryl] wants to take her mother [Dorothy] out to dinner. [Robert] also wants to take his sister [Dorothy] out to dinner.
('Cheryl', 'Harold')
[Cheryl] wants to take her mother [Dorothy] out to dinner. [Robert] also wants to take his sister [Dorothy] out to dinner. [Robert] always enjoyed playing with his sister, [Tracy], when they were growing up. [Harold] is the loving father of a beautiful girl named [Tracy].
[{('Cheryl', 'grandfather', 'Harold'): [('Cheryl', 'mother', 'Dorothy'), ('Dorothy', 'father', 'Harold')]}, {('Dorothy', 'father', 'Harold'): [('Dorothy', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'sister', 'Tracy')]}]
['mother', 'brother', 'sister', 'father']