[Elsie] was swimming with her sister [Michelle]. [Elsie]'s brother [Allan] was tanning. [Robert] went to pick up his son [Allan] from the baseball practice. [Mario]'s wife [Michelle] is happy to learn that [Mario] will be coming home next week.
('Robert', 'Mario')
[Robert] went to pick up his son [Allan] from the baseball practice. [Elsie] was swimming with her sister [Michelle]. [Elsie]'s brother [Allan] was tanning. [Mario]'s wife [Michelle] is happy to learn that [Mario] will be coming home next week.
[{('Robert', 'son-in-law', 'Mario'): [('Robert', 'daughter', 'Michelle'), ('Michelle', 'husband', 'Mario')]}, {('Robert', 'daughter', 'Michelle'): [('Robert', 'daughter', 'Elsie'), ('Elsie', 'sister', 'Michelle')]}, {('Robert', 'daughter', 'Elsie'): [('Robert', 'son', 'Allan'), ('Allan', 'sister', 'Elsie')]}]
['son', 'sister', 'sister', 'husband']