[Robert]'s son is sick today so his mother, [Lorraine], will stay home with him. [Robert] asked his father, [Wayne], to help him with his math homework. [Wayne] could n't, because he was lousy at math himself.
('Lorraine', 'Wayne')
[Robert]'s son is sick today so his mother, [Lorraine], will stay home with him. [Robert] asked his father, [Wayne], to help him with his math homework. [Wayne] could n't, because he was lousy at math himself.
[{('Lorraine', 'father-in-law', 'Wayne'): [('Lorraine', 'husband', 'Robert'), ('Robert', 'father', 'Wayne')]}]
['husband', 'father']