Question: who did the voice of wallace in wallace and gromit
[{'answer': 'Peter Sallis , OBE'}, {'provenance': [{'wikipedia_id': '951922', 'title': 'Peter Sallis', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 372, 'bleu_score': 0.857294001825432, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14760737552480699602}, 'section': 'Section::::Abstract.'}]}]