Question: where does the president approval rating come from
[{'answer': 'an opinion poll', 'provenance': [{'wikipedia_id': '2667864', 'title': 'United States presidential approval rating', 'start_paragraph_id': 1, 'start_character': 314, 'end_paragraph_id': 1, 'end_character': 329, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2667864', 'title': 'United States presidential approval rating', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 591, 'bleu_score': 0.89447059820642, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3139297622903209299}, 'section': 'Section::::Abstract.'}]}]