Question: when did the portuguese come to sri lanka
[{'answer': '1505', 'provenance': [{'wikipedia_id': '24551488', 'title': 'Portuguese Ceylon', 'start_paragraph_id': 2, 'start_character': 50, 'end_paragraph_id': 2, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]