[George] wanted his son, [Douglas], to go fishing with him. [Douglas]'s sister [Janet] asked him for some help planting her garden.
('Janet', 'George')
[Douglas]'s sister [Janet] asked him for some help planting her garden. [George] wanted his son, [Douglas], to go fishing with him.
[{('Janet', 'father', 'George'): [('Janet', 'brother', 'Douglas'), ('Douglas', 'father', 'George')]}]
['brother', 'father']