Question: what is the holy grail of great lakes shipwrecks
[{'answer': 'Le Griffon', 'provenance': [{'wikipedia_id': '452859', 'title': 'Le Griffon', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]