[Harold] helped his grandson [Bobby] cut the lawn for [Bobby]'s mother, [Tracy]. [Tracy] is a lovely mother. She has a son named [Bobby], who she loves infinitely. [Bettie] is always around her brother [Bobby].
('Bettie', 'Harold')
[Bettie] is always around her brother [Bobby]. [Tracy] is a lovely mother. She has a son named [Bobby], who she loves infinitely. [Harold] helped his grandson [Bobby] cut the lawn for [Bobby]'s mother, [Tracy].
[{('Bettie', 'grandfather', 'Harold'): [('Bettie', 'mother', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'grandfather', 'Harold')]}, {('Bettie', 'mother', 'Tracy'): [('Bettie', 'brother', 'Bobby'), ('Bobby', 'mother', 'Tracy')]}]
['brother', 'mother', 'son', 'grandfather']