Question: who were the judges on the x factor
[{'answer': 'Simon Cowell', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 1, 'start_character': 81, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'L.A. Reid', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 78, 'end_paragraph_id': 4, 'end_character': 87, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Paula Abdul', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 48, 'end_paragraph_id': 4, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Cheryl', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 61, 'end_paragraph_id': 4, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Nicole Scherzinger', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 94, 'end_paragraph_id': 4, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Britney Spears', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 229, 'end_paragraph_id': 4, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Demi Lovato', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 213, 'end_paragraph_id': 4, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Kelly Rowland', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 465, 'end_paragraph_id': 4, 'end_character': 478, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Paulina Rubio', 'provenance': [{'wikipedia_id': '33933753', 'title': 'The X Factor (American TV series)', 'start_paragraph_id': 4, 'start_character': 483, 'end_paragraph_id': 4, 'end_character': 496, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]