[Joshua] took his son [Joseph] to visit [David], [Joshua]'s sister. While they were there, [Lena], [David]'s sister called.
('Joseph', 'Lena')
[Joshua] took his son [Joseph] to visit [David], [Joshua]'s sister. While they were there, [Lena], [David]'s sister called.
[{('Joseph', 'aunt', 'Lena'): [('Joseph', 'father', 'Joshua'), ('Joshua', 'sister', 'Lena')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'sister', 'David'), ('David', 'sister', 'Lena')]}]
['father', 'sister', 'sister']