Question: who is the owner of the washington post
[{'answer': 'Nash Holdings', 'provenance': [{'wikipedia_id': '102226', 'title': 'The Washington Post', 'start_paragraph_id': 3, 'start_character': 99, 'end_paragraph_id': 3, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]