[Dorothy] took her sister [Tracy] out for dinner to celebrate her birthday. [Tracy] is a sister of [Robert]. [Beverly] loves to make cookies for her son. His name is [Michael]. [Robert] likes playing catch with his sister's son. His name is [Michael].
('Beverly', 'Dorothy')
[Beverly] loves to make cookies for her son. His name is [Michael]. [Robert] likes playing catch with his sister's son. His name is [Michael]. [Tracy] is a sister of [Robert]. [Dorothy] took her sister [Tracy] out for dinner to celebrate her birthday.
[{('Beverly', 'sister', 'Dorothy'): [('Beverly', 'brother', 'Robert'), ('Robert', 'sister', 'Dorothy')]}, {('Beverly', 'brother', 'Robert'): [('Beverly', 'son', 'Michael'), ('Michael', 'uncle', 'Robert')]}, {('Robert', 'sister', 'Dorothy'): [('Robert', 'sister', 'Tracy'), ('Tracy', 'sister', 'Dorothy')]}]
['son', 'uncle', 'sister', 'sister']