[Frances] loves her son [Wesley], [Wesley]'s sister is [David] who has a daughter named [Marie].
('Frances', 'Marie')
[Frances] loves her son [Wesley], [Wesley]'s sister is [David] who has a daughter named [Marie].
[{('Frances', 'granddaughter', 'Marie'): [('Frances', 'daughter', 'David'), ('David', 'daughter', 'Marie')]}, {('Frances', 'daughter', 'David'): [('Frances', 'son', 'Wesley'), ('Wesley', 'sister', 'David')]}]
['son', 'sister', 'daughter']