[Pamela]'s father [Wesley] and his wife [Lena] are visiting [Lena]'s brother [Hugh] this weekend.
('Hugh', 'Pamela')
[Pamela]'s father [Wesley] and his wife [Lena] are visiting [Lena]'s brother [Hugh] this weekend.
[{('Hugh', 'niece', 'Pamela'): [('Hugh', 'sister', 'Lena'), ('Lena', 'daughter', 'Pamela')]}, {('Lena', 'daughter', 'Pamela'): [('Lena', 'husband', 'Wesley'), ('Wesley', 'daughter', 'Pamela')]}]
['sister', 'husband', 'daughter']