Question: who came first barry allen or wally west
[{'answer': 'Barry Allen', 'provenance': [{'wikipedia_id': '31519', 'title': 'Flash (comics)', 'start_paragraph_id': 2, 'start_character': 243, 'end_paragraph_id': 2, 'end_character': 254, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31519', 'title': 'Flash (comics)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 542, 'bleu_score': 0.708606291520393, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12939684338549557092}, 'section': 'Section::::Abstract.'}]}]