Question: where were the beach scenes filmed in dunkirk
[{'answer': 'the beach of Dunkirk', 'provenance': [{'wikipedia_id': '48936686', 'title': 'Dunkirk (2017 film)', 'start_paragraph_id': 13, 'start_character': 185, 'end_paragraph_id': 13, 'end_character': 205, 'bleu_score': 1.0, 'section': 'Section::::Production.:Development.\n'}]}, {'provenance': [{'wikipedia_id': '48936686', 'title': 'Dunkirk (2017 film)', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 957, 'bleu_score': 0.9578265699909441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13887588488444611313}, 'section': 'Section::::Production.:Development.\n'}]}]