Question: who did the washington post endorse for president 2012
[{'answer': 'Barack Obama', 'provenance': [{'wikipedia_id': '37211068', 'title': 'Newspaper endorsements in the 2012 United States presidential election', 'start_paragraph_id': 2, 'start_character': 11, 'end_paragraph_id': 2, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]