When did Sergey Mikhaylovich Prokudin-Gorsky die?
Sergey Prokudin-Gorsky
{'answer_start': array([125]), 'answer_text': array(['September27, 1944'], dtype=object)}
Sergey Mikhaylovich Prokudin-Gorsky (Russian: Серге́й Миха́йлович Проку́дин-Го́рский, listen; August 30[O.S. August 18]1863– September27, 1944) was a Russian chemist and photographer. He is best known for his pioneering work in colour photography and his effort to document early 20th-century Russia.[1]