[Charles] went to the wedding ceremony for his brother [Chris]. [Martha] gave her brother [Charles] a new sweater for Christmas. [James] took his granddaughter [Martha] to the aquarium. She loved to pet the dolphins.
('James', 'Chris')
[James] took his granddaughter [Martha] to the aquarium. She loved to pet the dolphins. [Martha] gave her brother [Charles] a new sweater for Christmas. [Charles] went to the wedding ceremony for his brother [Chris].
[{('James', 'grandson', 'Chris'): [('James', 'grandson', 'Charles'), ('Charles', 'brother', 'Chris')]}, {('James', 'grandson', 'Charles'): [('James', 'granddaughter', 'Martha'), ('Martha', 'brother', 'Charles')]}]
['granddaughter', 'brother', 'brother']