Parse this person name:

Jet van der Mast, 1324-1396, flourished 1340-1359
user
first_name: Jet
last_name: van der Mast
middle_names: []
temporal:
- start: 1324
  end: 1396
  type: life_span
- start: 1340
  end: 1359
  type: flourished
titles: []
extra_info: []
assistant