Question: which is britains oldest sunday newspaper published for the first time in 1791
[{'answer': 'The Observer', 'provenance': [{'wikipedia_id': '191086', 'title': 'The Observer', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '191086', 'title': 'The Observer', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 370, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10196934736694362234}, 'section': 'Section::::Abstract.'}]}]