[Harold] and his daughter [Tracy] like to read poems together. [Mario]'s mother [Marie] secretly put money away for him to go on a trip next fall. [Tracy] and her sister [Marie] are the only children in their family. [Mario]'s father [Robert] is going to coach the team this year.
('Robert', 'Harold')
[Mario]'s father [Robert] is going to coach the team this year. [Mario]'s mother [Marie] secretly put money away for him to go on a trip next fall. [Tracy] and her sister [Marie] are the only children in their family. [Harold] and his daughter [Tracy] like to read poems together.
[{('Robert', 'father', 'Harold'): [('Robert', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Robert', 'sister', 'Tracy'): [('Robert', 'son', 'Mario'), ('Mario', 'aunt', 'Tracy')]}, {('Mario', 'aunt', 'Tracy'): [('Mario', 'mother', 'Marie'), ('Marie', 'sister', 'Tracy')]}]
['son', 'mother', 'sister', 'father']