[Robert] and his brother [Pedro] wanted to backpack across Europe together once they graduated college. [Robert] asked his sister [Beverly] to help him with his math homework. [Beverly] was n't sure what to do, so she asked her sister [Tracy] for some help. [Tracy] went shopping with her son. His name is [Bobby].
('Bobby', 'Pedro')
[Tracy] went shopping with her son. His name is [Bobby]. [Robert] asked his sister [Beverly] to help him with his math homework. [Beverly] was n't sure what to do, so she asked her sister [Tracy] for some help. [Robert] and his brother [Pedro] wanted to backpack across Europe together once they graduated college.
[{('Bobby', 'uncle', 'Pedro'): [('Bobby', 'mother', 'Tracy'), ('Tracy', 'brother', 'Pedro')]}, {('Tracy', 'brother', 'Pedro'): [('Tracy', 'sister', 'Beverly'), ('Beverly', 'brother', 'Pedro')]}, {('Beverly', 'brother', 'Pedro'): [('Beverly', 'brother', 'Robert'), ('Robert', 'brother', 'Pedro')]}]
['mother', 'sister', 'brother', 'brother']