[James] made a sandwich for his son [Hugh]. [Hugh]'s brother [Joshua] ate an apple instead. [Joshua] took his wife [Lynn] on a cruise for their anniversary.
('James', 'Lynn')
[James] made a sandwich for his son [Hugh]. [Hugh]'s brother [Joshua] ate an apple instead. [Joshua] took his wife [Lynn] on a cruise for their anniversary.
[{('James', 'daughter-in-law', 'Lynn'): [('James', 'son', 'Joshua'), ('Joshua', 'wife', 'Lynn')]}, {('James', 'son', 'Joshua'): [('James', 'son', 'Hugh'), ('Hugh', 'brother', 'Joshua')]}]
['son', 'brother', 'wife']