Question: where does the columbia river meet the pacific ocean
[{'answer': 'Columbia Bar', 'provenance': [{'wikipedia_id': '1673669', 'title': 'Columbia Bar', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1673669', 'title': 'Columbia Bar', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 212, 'bleu_score': 0.746047946692971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4217967176247613661}, 'section': 'Section::::Abstract.'}]}]