[Robert]'s daughter [Elsie] is a professional tennis player. [Elsie]'s brother [Michelle] is her manager. [Allan] loved his mother, [Marie]. [Marie] and her husband [Robert] went on a trip to the Netherlands last year.
('Michelle', 'Allan')
[Robert]'s daughter [Elsie] is a professional tennis player. [Elsie]'s brother [Michelle] is her manager. [Marie] and her husband [Robert] went on a trip to the Netherlands last year. [Allan] loved his mother, [Marie].
[{('Michelle', 'brother', 'Allan'): [('Michelle', 'sister', 'Elsie'), ('Elsie', 'brother', 'Allan')]}, {('Elsie', 'brother', 'Allan'): [('Elsie', 'father', 'Robert'), ('Robert', 'son', 'Allan')]}, {('Robert', 'son', 'Allan'): [('Robert', 'wife', 'Marie'), ('Marie', 'son', 'Allan')]}]
['sister', 'father', 'wife', 'son']