Parse this person name:

Sven Gerritsen, 1918-1984, flourished 1934-1964
user
first_name: Sven
last_name: Gerritsen
middle_names: []
temporal:
- start: 1918
  end: 1984
  type: life_span
- start: 1934
  end: 1964
  type: flourished
titles: []
extra_info: []
assistant