Question: when was the lost colony of roanoke founded
[{'answer': '1585', 'provenance': [{'wikipedia_id': '74547', 'title': 'Roanoke Colony', 'start_paragraph_id': 1, 'start_character': 159, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]