[George] had a great day with his son [Douglas]. After a long day of fishing he finally returned home to a beautiful meal cooked by his wife [Lillian].
('Lillian', 'Douglas')
[George] had a great day with his son [Douglas]. After a long day of fishing he finally returned home to a beautiful meal cooked by his wife [Lillian].
[{('Lillian', 'son', 'Douglas'): [('Lillian', 'husband', 'George'), ('George', 'son', 'Douglas')]}]
['husband', 'son']