Question: when was the white house correspondents dinner started
[{'answer': 'February 25 , 1914', 'provenance': [{'wikipedia_id': '4790115', 'title': "White House Correspondents' Association", 'start_paragraph_id': 1, 'start_character': 175, 'end_paragraph_id': 1, 'end_character': 195, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4790115', 'title': "White House Correspondents' Association", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 376, 'bleu_score': 0.965203995518735, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6906775834301860272}, 'section': 'Section::::Abstract.'}]}]