Question: is the gulf of mexico an ocean or sea
[{'answer': 'a marginal sea', 'provenance': [{'wikipedia_id': '21076367', 'title': 'Gulf of Mexico', 'start_paragraph_id': 1, 'start_character': 44, 'end_paragraph_id': 1, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21076367', 'title': 'Gulf of Mexico', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 500, 'bleu_score': 0.9177759077564911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13311573293857396803}, 'section': 'Section::::Abstract.'}]}]