[William] loves his grandmother, [Mary], and sends her flowers every day. [Michael] is [William]'s brother and they are best friends.
('Mary', 'Michael')
[William] loves his grandmother, [Mary], and sends her flowers every day. [Michael] is [William]'s brother and they are best friends.
[{('Mary', 'grandson', 'Michael'): [('Mary', 'grandson', 'William'), ('William', 'brother', 'Michael')]}]