Question: the most active form of vitamin e is
[{'answer': 'α - tocopherol', 'provenance': [{'wikipedia_id': '54104', 'title': 'Vitamin E', 'start_paragraph_id': 51, 'start_character': 414, 'end_paragraph_id': 51, 'end_character': 427, 'bleu_score': 1.0, 'section': 'Section::::Synthesis.:Biosynthesis.\n'}]}]