Question: who plays the dolphin in the spongebob movie
[{'answer': 'Matt Berry', 'provenance': [{'wikipedia_id': '35097496', 'title': 'The SpongeBob Movie: Sponge Out of Water', 'start_paragraph_id': 21, 'start_character': 12, 'end_paragraph_id': 21, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]