Question: when was we shall overcome by joan baez written
[{'answer': '1945', 'provenance': [{'wikipedia_id': '313670', 'title': 'We Shall Overcome', 'start_paragraph_id': 2, 'start_character': 115, 'end_paragraph_id': 2, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '313670', 'title': 'We Shall Overcome', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 858, 'bleu_score': 0.975852809799542, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2039855086298571673}, 'section': 'Section::::Abstract.'}]}]