[Dorothy] was upset because her husband, [Pedro], did n't buy her flowers for their wedding anniversary. [Harold] took his granddaughter [Annie] and grandson [Jerome] to the mall. [Jerome]'s father [Pedro] was busy and did n't go with them.
('Dorothy', 'Harold')
[Dorothy] was upset because her husband, [Pedro], did n't buy her flowers for their wedding anniversary. [Harold] took his granddaughter [Annie] and grandson [Jerome] to the mall. [Jerome]'s father [Pedro] was busy and did n't go with them.
[{('Dorothy', 'father-in-law', 'Harold'): [('Dorothy', 'husband', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'daughter', 'Annie'), ('Annie', 'grandfather', 'Harold')]}, {('Annie', 'grandfather', 'Harold'): [('Annie', 'brother', 'Jerome'), ('Jerome', 'grandfather', 'Harold')]}]
['husband', 'daughter', 'brother', 'grandfather']