Who has been held the longest in a hostage situation?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q192620', 'id': 0, 'label': 'hostage'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q111007953', 'id': 1, 'label': 'hostage taker'}], 'links': [{'name_': 'P461', 'source': 0, 'target': 1, 'label': 'opposite of'}]}