Question: which river forms the border between georgia and alabama
[{'answer': 'The Chattahoochee River', 'provenance': [{'wikipedia_id': '273478', 'title': 'Chattahoochee River', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '273478', 'title': 'Chattahoochee River', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 586, 'bleu_score': 0.9070995255074511, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1334474058716851037}, 'section': 'Section::::Abstract.'}]}]