Question: what came out first mr pibb or dr pepper
[{'answer': 'Dr Pepper', 'provenance': [{'wikipedia_id': '7438610', 'title': 'Dr Pepper', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7438610', 'title': 'Dr Pepper', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 268, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4487637319978721915}, 'section': 'Section::::History.:Legal and trade history.\n'}]}]