[Allan] braided his sister [Elsie]'s hair. [Allan] has a love-hate relation with his father [Robert]. [Robert] is a proud husband of one wife [Marie] [Elsie] was playing in the sandbox with her brother [John].
('Marie', 'John')
[Allan] has a love-hate relation with his father [Robert]. [Robert] is a proud husband of one wife [Marie] [Allan] braided his sister [Elsie]'s hair. [Elsie] was playing in the sandbox with her brother [John].
[{('Marie', 'son', 'John'): [('Marie', 'daughter', 'Elsie'), ('Elsie', 'brother', 'John')]}, {('Marie', 'daughter', 'Elsie'): [('Marie', 'son', 'Allan'), ('Allan', 'sister', 'Elsie')]}, {('Marie', 'son', 'Allan'): [('Marie', 'husband', 'Robert'), ('Robert', 'son', 'Allan')]}]
['husband', 'son', 'sister', 'brother']