[Bobby] was busy planning a 90th birthday party for his aunt, [Cindy]. [Hugh] took his sister [Lena] to the zoo. [Hugh] 'son [Bobby] did n't go because he is afraid of animals.
('Lena', 'Cindy')
[Hugh] took his sister [Lena] to the zoo. [Hugh] 'son [Bobby] did n't go because he is afraid of animals. [Bobby] was busy planning a 90th birthday party for his aunt, [Cindy].
[{('Lena', 'sister', 'Cindy'): [('Lena', 'brother', 'Hugh'), ('Hugh', 'sister', 'Cindy')]}, {('Hugh', 'sister', 'Cindy'): [('Hugh', 'son', 'Bobby'), ('Bobby', 'aunt', 'Cindy')]}]
['brother', 'son', 'aunt']