Question: when does the cannes film festival take place
[{'answer': 'usually in May', 'provenance': [{'wikipedia_id': '101460', 'title': 'Cannes Film Festival', 'start_paragraph_id': 1, 'start_character': 336, 'end_paragraph_id': 1, 'end_character': 350, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Cannes , France', 'provenance': [{'wikipedia_id': '101460', 'title': 'Cannes Film Festival', 'start_paragraph_id': 1, 'start_character': 165, 'end_paragraph_id': 1, 'end_character': 180, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '101460', 'title': 'Cannes Film Festival', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 394, 'bleu_score': 0.7633238284389381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10367157737593717558}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '101460', 'title': 'Cannes Film Festival', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10367157737593717558}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '101460', 'title': 'Cannes Film Festival', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Founded in 1946, the invitation-only festival is held annually (usually in May) at the Palais des Festivals et des Congrès.', "The Cannes Festival (; ), until 2002 called the International Film Festival (') and known in English as the Cannes Film Festival, is an annual film festival held in Cannes, France, which previews new films of all genres, including documentaries from all around the world. Founded in 1946, the invitation-only festival is held annually (usually in May) at the Palais des Festivals et des Congrès.", "The Cannes Festival (; ), until 2002 called the International Film Festival (') and known in English as the Cannes Film Festival, is an annual film festival held in Cannes, France,"]}}]}]