Question: what sea is off the coast of vietnam
[{'answer': 'Pacific Sea'}, {'provenance': [{'wikipedia_id': '32378', 'title': 'Geography of Vietnam', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 556, 'bleu_score': 0.609262787090679, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 459682597700679057}, 'section': 'Section::::Abstract.'}]}]