Question: who did the voice of mr. ed the talking horse
[{'answer': 'Allan Lane', 'provenance': [{'wikipedia_id': '252701', 'title': 'Mister Ed', 'start_paragraph_id': 10, 'start_character': 189, 'end_paragraph_id': 10, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Synopsis.\n'}]}, {'provenance': [{'wikipedia_id': '252701', 'title': 'Mister Ed', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 47, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12816443703047519440}, 'section': 'Section::::Cast.\n'}]}]