Question: who plays jacob in nightmare on elm street 5
[{'answer': 'Whit Hertford', 'provenance': [{'wikipedia_id': '3038054', 'title': 'A Nightmare on Elm Street 5: The Dream Child', 'start_paragraph_id': 17, 'start_character': 12, 'end_paragraph_id': 17, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '3038054', 'title': 'A Nightmare on Elm Street 5: The Dream Child', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 42, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2553395985171870949}, 'section': 'Section::::Cast.\n'}]}]