Question: who sang the original version of macarthur park
[{'answer': 'Richard Harris', 'provenance': [{'wikipedia_id': '1458258', 'title': 'MacArthur Park (song)', 'start_paragraph_id': 1, 'start_character': 63, 'end_paragraph_id': 1, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1458258', 'title': 'MacArthur Park (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 443, 'bleu_score': 0.674974996723478, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17201059222930462911}, 'section': 'Section::::Abstract.'}]}]