Question: what is the highest seed to play in ncaa championship
[{'answer': 'No. 1', 'provenance': [{'wikipedia_id': '507399', 'title': "NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 14, 'start_character': 271, 'end_paragraph_id': 14, 'end_character': 276, 'bleu_score': 1.0, 'section': 'Section::::Current tournament format.:Regions.:Seeding and bracket.\n'}]}, {'provenance': [{'wikipedia_id': '507399', 'title': "NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 225, 'start_character': 0, 'end_paragraph_id': 225, 'end_character': 77, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11188126633849037456}, 'section': 'Section::::Tournament statistics.:Highly seeded teams.:All No. 1 seeds in the Final Four.\n'}]}]