Parse this person name:

Juul Mulder, 1251-1298, flourished 1277-1290
user
first_name: Juul
last_name: Mulder
middle_names: []
temporal:
- start: 1251
  end: 1298
  type: life_span
- start: 1277
  end: 1290
  type: flourished
titles: []
extra_info: []
assistant