Parse this person name:

Simon de Groot, 1258-1331, flourished 1279-1291
user
first_name: Simon
last_name: de Groot
middle_names: []
temporal:
- start: 1258
  end: 1331
  type: life_span
- start: 1279
  end: 1291
  type: flourished
titles: []
extra_info: []
assistant