What is the longest desert in Africa?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q15', 'id': 0, 'label': 'Africa'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6583', 'id': 1, 'label': 'Sahara'}], 'links': [{'name_': 'P30', 'source': 1, 'target': 0, 'label': 'continent'}]}
The Sahara is a continent in Africa.
The African region is the location of the Sahara .
What is the longest desert in Africa?</s>The [unused1]Sahara                [unused2] is a continent in Africa.
What is the longest desert in Africa?</s>The Sahara is a continent in Africa.
What is the longest desert in Africa?</s>The African region is the location of the [unused1]Sahara                [unused2] .
What is the longest desert in Africa?</s>The African region is the location of the Sahara .
What is the longest desert in Africa?</s>Africa,0,Africa,Africa,0,[unused1]Sahara[unused2],[unused1]Sahara[unused2],continent,Africa,[unused1]Sahara[unused2],0,[unused1]Sahara[unused2]
What is the longest desert in Africa?</s>Africa,0,Africa,Africa,0,Sahara,Sahara,continent,Africa,Sahara,0,Sahara