Question: who won the latest food network star 2018
[{'answer': 'Christian Petroni', 'provenance': [{'wikipedia_id': '57614056', 'title': 'Food Network Star (season 14)', 'start_paragraph_id': 4, 'start_character': 12, 'end_paragraph_id': 4, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Contestants.:Winners.\n'}]}, {'answer': 'Jess Tom', 'provenance': [{'wikipedia_id': '57614056', 'title': 'Food Network Star (season 14)', 'start_paragraph_id': 5, 'start_character': 12, 'end_paragraph_id': 5, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Contestants.:Winners.\n'}]}]