Question: who played as darth vader in star wars
[{'answer': 'David Prowse', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 41, 'end_paragraph_id': 24, 'end_character': 53, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}, {'answer': 'Bob Anderson', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 107, 'end_paragraph_id': 24, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}, {'answer': 'Hayden Christensen', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 880, 'end_paragraph_id': 24, 'end_character': 898, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}, {'answer': 'Gene Bryant', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 903, 'end_paragraph_id': 24, 'end_character': 914, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}, {'answer': 'Spencer Wilding', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 1281, 'end_paragraph_id': 24, 'end_character': 1296, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}, {'answer': 'Daniel Naprous', 'provenance': [{'wikipedia_id': '53862', 'title': 'Darth Vader', 'start_paragraph_id': 24, 'start_character': 1301, 'end_paragraph_id': 24, 'end_character': 1315, 'bleu_score': 1.0, 'section': 'Section::::Creation and development.:Portrayals.\n'}]}]