[Michael]'s mother [David] bought a Christmas gift for his sister, [Vanetta]. [David] loves to make cookies for her son. His name is [Johnson].
('Vanetta', 'Johnson')
[Michael]'s mother [David] bought a Christmas gift for his sister, [Vanetta]. [David] loves to make cookies for her son. His name is [Johnson].
[{('Vanetta', 'brother', 'Johnson'): [('Vanetta', 'brother', 'Michael'), ('Michael', 'brother', 'Johnson')]}, {('Michael', 'brother', 'Johnson'): [('Michael', 'mother', 'David'), ('David', 'son', 'Johnson')]}]
['brother', 'mother', 'son']