[Lena] invited her nephew [Clarence] over for dinner one day. They also watched a movie. [Cindy] and her sister [Lena] played golf together. [Cindy] won easily. [Lynn] took her son [Clarence] to the mall to shop for school clothes.
('Lynn', 'Cindy')
[Lynn] took her son [Clarence] to the mall to shop for school clothes. [Lena] invited her nephew [Clarence] over for dinner one day. They also watched a movie. [Cindy] and her sister [Lena] played golf together. [Cindy] won easily.
[{('Lynn', 'sister', 'Cindy'): [('Lynn', 'sister', 'Lena'), ('Lena', 'sister', 'Cindy')]}, {('Lynn', 'sister', 'Lena'): [('Lynn', 'son', 'Clarence'), ('Clarence', 'aunt', 'Lena')]}]
['son', 'aunt', 'sister']