Question: name the ruler of russia during first world war
[{'answer': 'Nicholas II', 'provenance': [{'wikipedia_id': '15652771', 'title': 'Allied leaders of World War I', 'start_paragraph_id': 3, 'start_character': 12, 'end_paragraph_id': 3, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Russia.\n'}]}]