Parse this person name:

Ryan Aalts, 1921-1964, flourished 1938-1959
user
first_name: Ryan
last_name: Aalts
middle_names: []
temporal:
- start: 1921
  end: 1964
  type: life_span
- start: 1938
  end: 1959
  type: flourished
titles: []
extra_info: []
assistant