[Don] asked his father, [Joshua], to help him with his math homework. [Joshua] could n't, because he was lousy at math himself. [Lynn] spent the day at the beach with her husband [Joshua] and her daughter [Felicia].
('Don', 'Felicia')
[Don] asked his father, [Joshua], to help him with his math homework. [Joshua] could n't, because he was lousy at math himself. [Lynn] spent the day at the beach with her husband [Joshua] and her daughter [Felicia].
[{('Don', 'sister', 'Felicia'): [('Don', 'father', 'Joshua'), ('Joshua', 'daughter', 'Felicia')]}, {('Joshua', 'daughter', 'Felicia'): [('Joshua', 'wife', 'Lynn'), ('Lynn', 'daughter', 'Felicia')]}]
['father', 'wife', 'daughter']