Parse this person name:

Bram Keijser, 1905-1950, flourished 1928-1944
user
first_name: Bram
last_name: Keijser
middle_names: []
temporal:
- start: 1905
  end: 1950
  type: life_span
- start: 1928
  end: 1944
  type: flourished
titles: []
extra_info: []
assistant