Question: where is the rugby world cup being held next year
[{'answer': 'Japan', 'provenance': [{'wikipedia_id': '18884664', 'title': '2019 Rugby World Cup', 'start_paragraph_id': 1, 'start_character': 81, 'end_paragraph_id': 1, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]