Question: early cultures were present in the americas before the arrival of
[{'answer': 'Christopher Columbus', 'provenance': [{'wikipedia_id': '90001', 'title': 'Pre-Columbian era', 'start_paragraph_id': 2, 'start_character': 81, 'end_paragraph_id': 2, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '90001', 'title': 'Pre-Columbian era', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 474, 'bleu_score': 0.5502800864559271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1932895576859580910}, 'section': 'Section::::Abstract.'}]}]