Question: who played the mermaid in beach blanket bingo
[{'answer': 'Marta Kristen', 'provenance': [{'wikipedia_id': '4007440', 'title': 'Beach Blanket Bingo', 'start_paragraph_id': 4, 'start_character': 482, 'end_paragraph_id': 4, 'end_character': 495, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}]