[Keith] and his brother [Harry] wanted to go to the arcade. [Harry] asked his mother, [Michelle], if they could, and she said yes. [Donna] gave her brother [Keith] a new sweater for Christmas.
('Donna', 'Michelle')
[Donna] gave her brother [Keith] a new sweater for Christmas. [Keith] and his brother [Harry] wanted to go to the arcade. [Harry] asked his mother, [Michelle], if they could, and she said yes.
[{('Donna', 'mother', 'Michelle'): [('Donna', 'brother', 'Keith'), ('Keith', 'mother', 'Michelle')]}, {('Keith', 'mother', 'Michelle'): [('Keith', 'brother', 'Harry'), ('Harry', 'mother', 'Michelle')]}]