[Karen] was playing in the sandbox with her brother [Samuel]. [Paul] asked his brother [Samuel] and his dad [Louis] to lunch. [Louis] asked his sister [Dorothy] to come along.
('Karen', 'Dorothy')
[Karen] was playing in the sandbox with her brother [Samuel]. [Paul] asked his brother [Samuel] and his dad [Louis] to lunch. [Louis] asked his sister [Dorothy] to come along.
[{('Karen', 'aunt', 'Dorothy'): [('Karen', 'father', 'Louis'), ('Louis', 'sister', 'Dorothy')]}, {('Karen', 'father', 'Louis'): [('Karen', 'brother', 'Samuel'), ('Samuel', 'father', 'Louis')]}, {('Samuel', 'father', 'Louis'): [('Samuel', 'brother', 'Paul'), ('Paul', 'father', 'Louis')]}]
['brother', 'brother', 'father', 'sister']