[John] is a man with a brother named [Douglas]. [Douglas] and his brother [Timothy] both played soccer. [Douglas] was faster, but [Timothy] had a better shot, so they complemented each other well.
('John', 'Timothy')
[John] is a man with a brother named [Douglas]. [Douglas] and his brother [Timothy] both played soccer. [Douglas] was faster, but [Timothy] had a better shot, so they complemented each other well.
[{('John', 'brother', 'Timothy'): [('John', 'brother', 'Douglas'), ('Douglas', 'brother', 'Timothy')]}]
['brother', 'brother']