Question: an agreement to exchange two currencies is called a(n)
[{'answer': 'cross-currency swap', 'provenance': [{'wikipedia_id': '2317015', 'title': 'Currency swap', 'start_paragraph_id': 1, 'start_character': 53, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2317015', 'title': 'Currency swap', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 420, 'bleu_score': 0.9417246919057981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3311820298438696779}, 'section': 'Section::::General description.\n'}]}]