[Linda] it going back to Boston to visit her sister [Lorraine] and her brother [Jacob].
('Jacob', 'Lorraine')
[Linda] it going back to Boston to visit her sister [Lorraine] and her brother [Jacob].
[{('Jacob', 'sister', 'Lorraine'): [('Jacob', 'sister', 'Linda'), ('Linda', 'sister', 'Lorraine')]}]
['sister', 'sister']