Question: the gulf stream the world's fastest ocean current flows along the western side of this water body
[{'answer': 'Atlantic ocean', 'provenance': [{'wikipedia_id': '23686446', 'title': 'Gulf Stream', 'start_paragraph_id': 1, 'start_character': 100, 'end_paragraph_id': 1, 'end_character': 114, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23686446', 'title': 'Gulf Stream', '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': 8814916965412236593}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23686446', 'title': 'Gulf Stream', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 628, 'bleu_score': 0.833863131001303, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8814916965412236593}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23686446', 'title': 'Gulf Stream', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Gulf Stream, together with its northern extension the North Atlantic Drift', 'The Gulf Stream, together with its northern extension the North Atlantic Drift, is a warm and swift Atlantic ocean current that originates in the Gulf of Mexico and stretches to the tip of Florida, and follows the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean.', 'The Gulf Stream, together with its northern extension the North Atlantic Drift, is a warm and swift Atlantic ocean current that originates in the Gulf of Mexico and stretches to the tip of Florida, and follows the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean. The process of western intensification causes the Gulf Stream to be a northward accelerating current off the east coast of North America. At about , it splits in two, with the northern stream, the North Atlantic Drift, crossing to Northern Europe and the southern stream, the Canary Current, recirculating off West Africa.']}}]}]