Question: what style of art did van gogh do
[{'answer': 'Post-Impressionist'}, {'provenance': [{'wikipedia_id': '32603', 'title': 'Vincent van Gogh', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 626, 'bleu_score': 0.809862621330214, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15118191490304756047}, 'section': 'Section::::Abstract.'}]}]