[Joshua] and his son [Joseph] went to the skating rink. [James] took his daughter [Lena] to ballet class. [Lena] does n't always get along with her brother [Joshua]. Sometimes they fight like siblings do.
('Joseph', 'James')
[Joshua] and his son [Joseph] went to the skating rink. [Lena] does n't always get along with her brother [Joshua]. Sometimes they fight like siblings do. [James] took his daughter [Lena] to ballet class.
[{('Joseph', 'grandfather', 'James'): [('Joseph', 'father', 'Joshua'), ('Joshua', 'father', 'James')]}, {('Joshua', 'father', 'James'): [('Joshua', 'sister', 'Lena'), ('Lena', 'father', 'James')]}]
['father', 'sister', 'father']