[Francisco] decided to take his sister [David] and her son [Johnson] to dinner yesterday and called his father [James] also to see if he wanted to come along.
('James', 'Johnson')
[Francisco] decided to take his sister [David] and her son [Johnson] to dinner yesterday and called his father [James] also to see if he wanted to come along.
[{('James', 'grandson', 'Johnson'): [('James', 'daughter', 'David'), ('David', 'son', 'Johnson')]}, {('James', 'daughter', 'David'): [('James', 'son', 'Francisco'), ('Francisco', 'sister', 'David')]}]
['son', 'sister', 'son']