Question: who won the long beach grand prix this year
[{'answer': 'Alexander Rossi', 'provenance': [{'wikipedia_id': '967558', 'title': 'Grand Prix of Long Beach', 'start_paragraph_id': 74, 'start_character': 190, 'end_paragraph_id': 74, 'end_character': 205, 'bleu_score': 1.0, 'section': 'Section::::Race summaries.:IndyCar Series.\n'}]}]