Question: how much land does the united states government own
[{'answer': '640 million acres', 'provenance': [{'wikipedia_id': '2085702', 'title': 'Federal lands', 'start_paragraph_id': 2, 'start_character': 34, 'end_paragraph_id': 2, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2085702', 'title': 'Federal lands', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 686, 'bleu_score': 0.9832621206481431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7167211396757132225}, 'section': 'Section::::Abstract.'}]}]