Question: who made the first spanish landing on the mainland of north america
[{'answer': '1535', 'provenance': [{'wikipedia_id': '53091', 'title': 'Spanish colonization of the Americas', 'start_paragraph_id': 11, 'start_character': 589, 'end_paragraph_id': 11, 'end_character': 593, 'bleu_score': 1.0, 'section': 'Section::::Conquests.:Mexico.\n'}]}, {'answer': 'Christopher Columbus'}, {'provenance': [{'wikipedia_id': '53091', 'title': 'Spanish colonization of the Americas', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6970063224584199756}, 'section': 'Section::::Abstract.'}]}, {}, {'provenance': [{'wikipedia_id': '24490545', 'title': 'Exploration of North America', 'section': 'Section::::Age of Discovery and the search for the Northwest Passage.\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['scanning the Central American coast. The Voyages of Christopher Columbus opened the New World.', 'The Voyages of Christopher Columbus opened the New World. Italian navigator and explorer Giovanni Caboto (known in English as John Cabot) is credited with the discovery of continental North America', "scanning the Central American coast. The Voyages of Christopher Columbus opened the New World. Italian navigator and explorer Giovanni Caboto (known in English as John Cabot) is credited with the discovery of continental North America on June 24, 1497, under the commission of Henry VII of England. Though the exact location of his discovery remains disputed, the Canadian and United Kingdom governments' official position is that he landed on the island of Newfoundland. The English presence through Giovanni Caboto was signaled in Juan de la Cosa's map of 1500.\rhighlight sentence(s) containing evidence, not only the answer"]}}]}]