Parse this person name:

Gregory Parks (1211-1251, flourished 1239-1246)
user
first_name: Gregory
last_name: Parks
middle_names: []
temporal:
- start: 1211
  end: 1251
  type: life_span
- start: 1239
  end: 1246
  type: flourished
titles: []
extra_info: []
assistant