Question: when was for whom the bell tolls first published
[{'answer': '1940', 'provenance': [{'wikipedia_id': '77652', 'title': 'For Whom the Bell Tolls', 'start_paragraph_id': 1, 'start_character': 68, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '77652', 'title': 'For Whom the Bell Tolls', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 298, 'bleu_score': 0.871115133229549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14548611379921140118}, 'section': 'Section::::Abstract.'}]}]