Parse this person name:

Nikolaos Speer (1917-1959, flourished 1938-1954)
user
first_name: Nikolaos
last_name: Speer
middle_names: []
temporal:
- start: 1917
  end: 1959
  type: life_span
- start: 1938
  end: 1954
  type: flourished
titles: []
extra_info: []
assistant