[Douglas] is one of [Andrea]'s brothers. They have lots of fun together. [Andrea] went to the opera with her grandfather [Clarence].
('Clarence', 'Douglas')
[Andrea] went to the opera with her grandfather [Clarence]. [Douglas] is one of [Andrea]'s brothers. They have lots of fun together.
[{('Clarence', 'grandson', 'Douglas'): [('Clarence', 'granddaughter', 'Andrea'), ('Andrea', 'brother', 'Douglas')]}]
['granddaughter', 'brother']