[Joseph]'s grandfather, [James], just had a birthday. [Joseph] and the rest of the family threw [James] a big party. [Joshua] decided to take his son, [Joseph], on a ski vacation. [Joshua] went shopping with his wife [Lynn].
('Lynn', 'James')
[Joshua] went shopping with his wife [Lynn]. [Joshua] decided to take his son, [Joseph], on a ski vacation. [Joseph]'s grandfather, [James], just had a birthday. [Joseph] and the rest of the family threw [James] a big party.
[{('Lynn', 'father-in-law', 'James'): [('Lynn', 'husband', 'Joshua'), ('Joshua', 'father', 'James')]}, {('Joshua', 'father', 'James'): [('Joshua', 'son', 'Joseph'), ('Joseph', 'grandfather', 'James')]}]
['husband', 'son', 'grandfather']