Question: who does princess maria marry in war and peace
[{'answer': 'Nikolai Rostov', 'provenance': [{'wikipedia_id': '11944788', 'title': 'Maria Bolkonskaya', 'start_paragraph_id': 3, 'start_character': 158, 'end_paragraph_id': 3, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11944788', 'title': 'Maria Bolkonskaya', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 743, 'bleu_score': 0.983672097934538, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9503992883592741231}, 'section': 'Section::::Abstract.'}]}]