Parse this person name:

Mirthe Simons-Gellemeyer (1258-1337, flourished 1273-1284)
user
first_name: Mirthe
last_name: Simons-Gellemeyer
middle_names: []
temporal:
- start: 1258
  end: 1337
  type: life_span
- start: 1273
  end: 1284
  type: flourished
titles: []
extra_info: []
assistant