Question: where does the word o.k. come from
[{'answer': 'all correct', 'provenance': [{'wikipedia_id': '167097', 'title': 'OK', 'start_paragraph_id': 7, 'start_character': 179, 'end_paragraph_id': 7, 'end_character': 190, 'bleu_score': 1.0, 'section': 'Section::::Proposed etymologies.:Boston abbreviation fad.\n'}]}, {'answer': 'Oll Korrect', 'provenance': [{'wikipedia_id': '167097', 'title': 'OK', 'start_paragraph_id': 7, 'start_character': 233, 'end_paragraph_id': 7, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Proposed etymologies.:Boston abbreviation fad.\n'}]}, {'answer': 'Ole Kurreck', 'provenance': [{'wikipedia_id': '167097', 'title': 'OK', 'start_paragraph_id': 7, 'start_character': 255, 'end_paragraph_id': 7, 'end_character': 266, 'bleu_score': 1.0, 'section': 'Section::::Proposed etymologies.:Boston abbreviation fad.\n'}]}, {'provenance': [{'wikipedia_id': '167097', 'title': 'OK', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 266, 'bleu_score': 0.8780099567239781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11922527345347096660}, 'section': 'Section::::Proposed etymologies.:Boston abbreviation fad.\n'}]}]