[James] took his daughter [Lynn] to the candy store. [Lynn]'s sister [David] was at the dentist because she had a cavity. [David] asked her son [Johnson] to take her car to get the oil changed and he said he would be there around 2 o'clock.
('Johnson', 'James')
[David] asked her son [Johnson] to take her car to get the oil changed and he said he would be there around 2 o'clock. [James] took his daughter [Lynn] to the candy store. [Lynn]'s sister [David] was at the dentist because she had a cavity.
[{('Johnson', 'grandfather', 'James'): [('Johnson', 'mother', 'David'), ('David', 'father', 'James')]}, {('David', 'father', 'James'): [('David', 'sister', 'Lynn'), ('Lynn', 'father', 'James')]}]
['mother', 'sister', 'father']