Question: what popular soft drink had its birthplace in waco texas
[{'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': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 440, 'bleu_score': 0.640965995646679, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8625752353961070636}, 'section': 'Section::::Abstract.'}]}]