Question: what is the abbreviation for the state of missouri
[{'answer': 'MO', 'provenance': [{'wikipedia_id': '399492', 'title': 'List of U.S. state abbreviations', 'start_paragraph_id': 20, 'start_character': 314, 'end_paragraph_id': 20, 'end_character': 316, 'bleu_score': 1.0, 'section': 'Section::::Codes for states and territories.:Postal codes.\n'}]}]