Question: what form of federalism was most recently associated with the united states
[{'answer': 'associative federalism', 'provenance': [{'wikipedia_id': '11542', 'title': 'Federalism', 'start_paragraph_id': 75, 'start_character': 211, 'end_paragraph_id': 75, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Examples of federalism.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '11542', 'title': 'Federalism', 'start_paragraph_id': 75, 'start_character': 0, 'end_paragraph_id': 75, 'end_character': 683, 'bleu_score': 0.9810405040225261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11456471083208533621}, 'section': 'Section::::Examples of federalism.:United States.\n'}]}]