Question: who was in the video don't worry be happy
[{'answer': 'McFerrin', 'provenance': [{'wikipedia_id': '1390782', 'title': "Don't Worry, Be Happy", 'start_paragraph_id': 1, 'start_character': 83, 'end_paragraph_id': 1, 'end_character': 91, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Robin Williams', 'provenance': [{'wikipedia_id': '1390782', 'title': "Don't Worry, Be Happy", 'start_paragraph_id': 9, 'start_character': 62, 'end_paragraph_id': 9, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Music video.\n'}]}, {'answer': 'Bill Irwin', 'provenance': [{'wikipedia_id': '1390782', 'title': "Don't Worry, Be Happy", 'start_paragraph_id': 9, 'start_character': 82, 'end_paragraph_id': 9, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Music video.\n'}]}, {'provenance': [{'wikipedia_id': '1390782', 'title': "Don't Worry, Be Happy", 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 140, 'bleu_score': 0.9146912192286941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4002874624595402740}, 'section': 'Section::::Music video.\n'}]}]