Question: who is the main character in no game no life
[{'answer': 'Sora', 'provenance': [{'wikipedia_id': '40089475', 'title': 'No Game No Life', 'start_paragraph_id': 1, 'start_character': 19, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40089475', 'title': 'No Game No Life', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 454, 'bleu_score': 0.9430699958503841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3056729863648546671}, 'section': 'Section::::Abstract.'}]}]