Parse this person name:

Sebastiaan Arens-van Hamaland, flourished 1235-1246, flourished 1235-1246
user
first_name: Sebastiaan
last_name: Arens-van Hamaland
middle_names: []
temporal:
- start: 1235
  end: 1246
  type: flourished
titles: []
extra_info: []
assistant