[Donna] loves her brother [Tom]. [Harry] was playing football with his brother, [Keith]. [Harry]'s brother, [Tom], had a broken leg and could only watch.
('Donna', 'Keith')
[Donna] loves her brother [Tom]. [Harry] was playing football with his brother, [Keith]. [Harry]'s brother, [Tom], had a broken leg and could only watch.
[{('Donna', 'brother', 'Keith'): [('Donna', 'brother', 'Harry'), ('Harry', 'brother', 'Keith')]}, {('Donna', 'brother', 'Harry'): [('Donna', 'brother', 'Tom'), ('Tom', 'brother', 'Harry')]}]