Question: who was runner up on americas got talent 2018
[{'answer': 'Zurcaroh', 'provenance': [{'wikipedia_id': '57001539', 'title': "America's Got Talent (season 13)", 'start_paragraph_id': 5, 'start_character': 137, 'end_paragraph_id': 5, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]