Question: what is the strait between the black sea and the sea of marmara
[{'answer': 'The Bosporus', 'provenance': [{'wikipedia_id': '3705', 'title': 'Bosporus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3705', 'title': 'Bosporus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 532, 'bleu_score': 0.6323747734631741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5689033633908111753}, 'section': 'Section::::Abstract.'}]}]