Question: the legend of the blue sea actor name
[{'answer': 'Lee Min - ho', 'provenance': [{'wikipedia_id': '50680199', 'title': 'Legend of the Blue Sea', 'start_paragraph_id': 54, 'start_character': 35, 'end_paragraph_id': 54, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}]