Who was the eighth president of the United States?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1520223', 'id': 1, 'label': 'constitutional republic'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P31', 'source': 0, 'target': 1, 'label': 'instance of'}]}
The United States of America is a constitutional republic.
The United States of America , which is the location of the constitutional republic , is the country of birth .
Who was the eighth president of the United States?</s>The United States of America is a [unused1]constitutional republic                [unused2] .
Who was the eighth president of the United States?</s>The United States of America is a constitutional republic.
Who was the eighth president of the United States?</s>The United States of America , which is the location of the [unused1]constitutional republic                [unused2] , is the country of birth .
Who was the eighth president of the United States?</s>The United States of America , which is the location of the constitutional republic , is the country of birth .
Who was the eighth president of the United States?</s>United States of America,country,United States of America,United States of America,instance of,[unused1]constitutional republic[unused2],[unused1]constitutional republic[unused2],0,United States of America,[unused1]constitutional republic[unused2],0,[unused1]constitutional republic[unused2]
Who was the eighth president of the United States?</s>United States of America,country,United States of America,United States of America,instance of,constitutional republic,constitutional republic,0,United States of America,constitutional republic,0,constitutional republic