Question: who starred in the movie an american in paris
[{'answer': 'Gene Kelly', 'provenance': [{'wikipedia_id': '1587300', 'title': 'An American in Paris (film)', 'start_paragraph_id': 1, 'start_character': 149, 'end_paragraph_id': 1, 'end_character': 159, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Leslie Caron', 'provenance': [{'wikipedia_id': '1587300', 'title': 'An American in Paris (film)', 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Oscar Levant', 'provenance': [{'wikipedia_id': '1587300', 'title': 'An American in Paris (film)', 'start_paragraph_id': 1, 'start_character': 175, 'end_paragraph_id': 1, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Georges Guétary', 'provenance': [{'wikipedia_id': '1587300', 'title': 'An American in Paris (film)', 'start_paragraph_id': 1, 'start_character': 189, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Nina Foch', 'provenance': [{'wikipedia_id': '1587300', 'title': 'An American in Paris (film)', 'start_paragraph_id': 1, 'start_character': 210, 'end_paragraph_id': 1, 'end_character': 219, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]