Question: who brought the first lemon seeds to america
[{'answer': 'Christopher Columbus', 'provenance': [{'wikipedia_id': '21299730', 'title': 'Lemon', 'start_paragraph_id': 6, 'start_character': 164, 'end_paragraph_id': 6, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '21299730', 'title': 'Lemon', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 443, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3144187540335869607}, 'section': 'Section::::History.\n'}]}]