Question: who enforces the surface mining control and reclamation act of 1977
[{'answer': 'Department of the Interior', 'provenance': [{'wikipedia_id': '3473748', 'title': 'Surface Mining Control and Reclamation Act of 1977', 'start_paragraph_id': 2, 'start_character': 185, 'end_paragraph_id': 2, 'end_character': 211, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3473748', 'title': 'Surface Mining Control and Reclamation Act of 1977', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 347, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13964520581192134716}, 'section': 'Section::::Abstract.'}]}]