Question: who began the age of exploration in portugal
[{'answer': 'King Dinis of Portugal', 'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'start_paragraph_id': 41, 'start_character': 64, 'end_paragraph_id': 41, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Atlantic Ocean (1419–1507).:Portuguese exploration.\n'}]}, {'answer': 'Afonso IV of Portugal', 'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'start_paragraph_id': 41, 'start_character': 551, 'end_paragraph_id': 41, 'end_character': 572, 'bleu_score': 1.0, 'section': 'Section::::Atlantic Ocean (1419–1507).:Portuguese exploration.\n'}]}, {'answer': 'Prince Henry', 'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'start_paragraph_id': 5, 'start_character': 111, 'end_paragraph_id': 5, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', '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': 12355252022364416719}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'start_paragraph_id': 41, 'start_character': 0, 'end_paragraph_id': 41, 'end_character': 831, 'bleu_score': 0.9845548242372031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12355252022364416719}, 'section': 'Section::::Atlantic Ocean (1419–1507).:Portuguese exploration.\n'}]}, {'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'start_paragraph_id': 5, 'start_character': 4, 'end_paragraph_id': 5, 'end_character': 915, 'bleu_score': 0.8998730020942861, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12355252022364416719}, 'section': 'Section::::Overview.\n'}]}, {'provenance': [{'wikipedia_id': '690842', 'title': 'Age of Discovery', 'section': 'Section::::Overview.\n', 'start_paragraph_id': 5, 'end_paragraph_id': 5, 'meta': {'evidence_span': ['The Portuguese began systematically exploring the Atlantic coast of Africa from 1418, under the sponsorship of Prince Henry. Under the direction of Henry the Navigator, the Portuguese developed a new, much lighter ship, the caravel, which could sail farther and faster, and, above all, was highly manoeuvrable and could sail much nearer the wind, or "into the wind". In 1488 Bartolomeu Dias reached the Indian Ocean by this route. In 1492 the Catholic Monarchs of Castile and Aragon funded Christopher Columbus\'s plan to sail west to reach the Indies by crossing the Atlantic. He landed on a continent uncharted by Europeans and seen as a new world, the Americas', 'sponsorship of Prince Henry. Under the direction of Henry the Navigator, the Portuguese developed a new,']}}]}]