Question: when was elegy written in a country churchyard published
[{'answer': '1751', 'provenance': [{'wikipedia_id': '3907141', 'title': 'Elegy Written in a Country Churchyard', 'start_paragraph_id': 1, 'start_character': 105, 'end_paragraph_id': 1, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3907141', 'title': 'Elegy Written in a Country Churchyard', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 642, 'bleu_score': 0.9684508972267961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6472633290498801149}, 'section': 'Section::::Abstract.'}]}]