Parse this person name:

Henck Lehmann, Anthony David Q. Mesut Valentine, 1921-1968
user
first_name: Anthony
last_name: Henck Lehmann
middle_names:
- David
- Q.
- Mesut
- Valentine
temporal:
- start: 1921
  end: 1968
  type: life_span
titles: []
extra_info: []
assistant