[Jennifer]'s uncle [Pedro] was looking forward to visiting for the summer. [Dorothy] and her sister [Beverly] went to the basketball game. [Dorothy] invited [Antonio] to meet them there, since she is his sister. [Jennifer] and her mother [Beverly] went dress shopping on Saturday.
('Antonio', 'Pedro')
[Dorothy] and her sister [Beverly] went to the basketball game. [Dorothy] invited [Antonio] to meet them there, since she is his sister. [Jennifer] and her mother [Beverly] went dress shopping on Saturday. [Jennifer]'s uncle [Pedro] was looking forward to visiting for the summer.
[{('Antonio', 'brother', 'Pedro'): [('Antonio', 'sister', 'Beverly'), ('Beverly', 'brother', 'Pedro')]}, {('Beverly', 'brother', 'Pedro'): [('Beverly', 'daughter', 'Jennifer'), ('Jennifer', 'uncle', 'Pedro')]}, {('Antonio', 'sister', 'Beverly'): [('Antonio', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Beverly')]}]
['sister', 'sister', 'daughter', 'uncle']