Question: when items are to be retrieved in reverse order from which they were stored we use
[{'answer': 'a stack', 'provenance': [{'wikipedia_id': '273993', 'title': 'Stack (abstract data type)', 'start_paragraph_id': 4, 'start_character': 37, 'end_paragraph_id': 4, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '273993', 'title': 'Stack (abstract data type)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 475, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9481451622415420096}, 'section': 'Section::::Abstract.'}]}]