Question: when did fosters home for imaginary friends start
[{'answer': 'August 13 , 2004', 'provenance': [{'wikipedia_id': '937472', 'title': "Foster's Home for Imaginary Friends", 'start_paragraph_id': 24, 'start_character': 51, 'end_paragraph_id': 24, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'provenance': [{'wikipedia_id': '937472', 'title': "Foster's Home for Imaginary Friends", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 477, 'bleu_score': 0.7321336199005991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17844614460047452368}, 'section': 'Section::::Abstract.'}]}]