[Ashley] played catch with her grandson [Kevin]. [Kevin]'s father [Wayne] was busy at work and could n't join them.
('Wayne', 'Ashley')
[Ashley] played catch with her grandson [Kevin]. [Kevin]'s father [Wayne] was busy at work and could n't join them.
[{('Wayne', 'mother', 'Ashley'): [('Wayne', 'son', 'Kevin'), ('Kevin', 'grandmother', 'Ashley')]}]
['son', 'grandmother']