[Dale] is taking his son [James] out for coffee. [Amy] gave her brother [Dale] a new sweater for Christmas.
('Amy', 'James')
[Amy] gave her brother [Dale] a new sweater for Christmas. [Dale] is taking his son [James] out for coffee.
[{('Amy', 'nephew', 'James'): [('Amy', 'brother', 'Dale'), ('Dale', 'son', 'James')]}]
['brother', 'son']