Question: who played freddy krueger on nightmare on elm street
[{'answer': 'Robert Barton Englund', 'provenance': [{'wikipedia_id': '592454', 'title': 'Robert Englund', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '592454', 'title': 'Robert Englund', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 400, 'bleu_score': 0.6874390318806151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12862866420820219337}, 'section': 'Section::::Abstract.'}]}]