[Jacob] and his daughter, [Alberta] go to concerts every week. [Alberta] was cooking dinner for her husband [David].
('Jacob', 'David')
[Jacob] and his daughter, [Alberta] go to concerts every week. [Alberta] was cooking dinner for her husband [David].
[{('Jacob', 'son-in-law', 'David'): [('Jacob', 'daughter', 'Alberta'), ('Alberta', 'husband', 'David')]}]