[Lena] invited her brother [Joshua], his wife [Lynn] and their daughter [Andrea] over for dinner last Sunday.
('Lena', 'Andrea')
[Lena] invited her brother [Joshua], his wife [Lynn] and their daughter [Andrea] over for dinner last Sunday.
[{('Lena', 'niece', 'Andrea'): [('Lena', 'brother', 'Joshua'), ('Joshua', 'daughter', 'Andrea')]}, {('Joshua', 'daughter', 'Andrea'): [('Joshua', 'wife', 'Lynn'), ('Lynn', 'daughter', 'Andrea')]}]
['brother', 'wife', 'daughter']