[David] and [Lena] wishes their parents [Frances] and [James] at their wedding anniversary
('James', 'David')
[David] and [Lena] wishes their parents [Frances] and [James] at their wedding anniversary
[{('James', 'daughter', 'David'): [('James', 'wife', 'Frances'), ('Frances', 'daughter', 'David')]}, {('Frances', 'daughter', 'David'): [('Frances', 'daughter', 'Lena'), ('Lena', 'sister', 'David')]}]
['wife', 'daughter', 'sister']