[Shantel] looked all over the house for her son [Pedro], but could n't find him. That's because [Pedro] was outside in the back yard, playing baseball with his brother [Robert]. [Erika] and her mother [Tracy] attended a play at the theater. [Tracy] adores her daughter [Shantel]. [Shantel] loves her very much, too.
('Robert', 'Erika')
[Shantel] looked all over the house for her son [Pedro], but could n't find him. That's because [Pedro] was outside in the back yard, playing baseball with his brother [Robert]. [Tracy] adores her daughter [Shantel]. [Shantel] loves her very much, too. [Erika] and her mother [Tracy] attended a play at the theater.
[{('Robert', 'niece', 'Erika'): [('Robert', 'sister', 'Tracy'), ('Tracy', 'daughter', 'Erika')]}, {('Robert', 'sister', 'Tracy'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'sister', 'Tracy')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'mother', 'Shantel'), ('Shantel', 'daughter', 'Tracy')]}]
['brother', 'mother', 'daughter', 'daughter']