Question: where did the reserved powers find their constitutional mandate
[{'answer': 'the Tenth Amendment', 'provenance': [{'wikipedia_id': '2634753', 'title': 'Enumerated powers (United States)', 'start_paragraph_id': 1, 'start_character': 415, 'end_paragraph_id': 1, 'end_character': 434, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2634753', 'title': 'Enumerated powers (United States)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 597, 'bleu_score': 0.573973384086203, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11987795244837406631}, 'section': 'Section::::Abstract.'}]}]