Question: who wrote the song i have a dream
[{'answer': 'Benny Andersson', 'provenance': [{'wikipedia_id': '3166356', 'title': 'I Have a Dream (song)', 'start_paragraph_id': 3, 'start_character': 24, 'end_paragraph_id': 3, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'answer': 'Bjorn Ulvaeus'}, {'provenance': [{'wikipedia_id': '3166356', 'title': 'I Have a Dream (song)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 692, 'bleu_score': 0.9202918015801601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 390829949041265501}, 'section': 'Section::::Overview.\n'}]}]