[Charles]'s father, [Wesley], bought him some ice cream. [James] took his grandson [Charles] out for ice-cream. [Wesley] took his daughter [Martha] to the store
('James', 'Martha')
[James] took his grandson [Charles] out for ice-cream. [Charles]'s father, [Wesley], bought him some ice cream. [Wesley] took his daughter [Martha] to the store
[{('James', 'granddaughter', 'Martha'): [('James', 'grandson', 'Charles'), ('Charles', 'sister', 'Martha')]}, {('Charles', 'sister', 'Martha'): [('Charles', 'father', 'Wesley'), ('Wesley', 'daughter', 'Martha')]}]
['grandson', 'father', 'daughter']