[Dennis] wanted to buy a great gift for his mom, [Amy], so he asked her brother, [Dale], for advice.
('Dale', 'Dennis')
[Dennis] wanted to buy a great gift for his mom, [Amy], so he asked her brother, [Dale], for advice.
[{('Dale', 'nephew', 'Dennis'): [('Dale', 'sister', 'Amy'), ('Amy', 'son', 'Dennis')]}]
['sister', 'son']