Question: what is the class of a bottlenose dolphin
[{'answer': 'Mammalia', 'provenance': [{'wikipedia_id': '296994', 'title': 'Bottlenose dolphin', 'start_paragraph_id': 40, 'start_character': 330, 'end_paragraph_id': 40, 'end_character': 338, 'bleu_score': 1.0, 'section': 'Section::::Intelligence.:Tool use and culture.\n'}]}]