Question: who's the special judge on america's got talent
[{'answer': 'Chris Hardwick', 'provenance': [{'wikipedia_id': '4829129', 'title': "America's Got Talent", 'start_paragraph_id': 65, 'start_character': 85, 'end_paragraph_id': 65, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 12 (2017).\n'}]}, {'answer': 'DJ Khaled', 'provenance': [{'wikipedia_id': '4829129', 'title': "America's Got Talent", 'start_paragraph_id': 65, 'start_character': 101, 'end_paragraph_id': 65, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 12 (2017).\n'}]}, {'answer': 'Laverne Cox', 'provenance': [{'wikipedia_id': '4829129', 'title': "America's Got Talent", 'start_paragraph_id': 65, 'start_character': 112, 'end_paragraph_id': 65, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 12 (2017).\n'}]}, {'answer': 'Seal', 'provenance': [{'wikipedia_id': '4829129', 'title': "America's Got Talent", 'start_paragraph_id': 65, 'start_character': 128, 'end_paragraph_id': 65, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 12 (2017).\n'}]}]