Parse this person name:

Merijn van Nimwegen, 1274-1317, flourished 1289-1302
user
first_name: Merijn
last_name: van Nimwegen
middle_names: []
temporal:
- start: 1274
  end: 1317
  type: life_span
- start: 1289
  end: 1302
  type: flourished
titles: []
extra_info: []
assistant