Parse this person name:

Maartje Elsenaar (1286-1337, flourished 1304-1320)
user
first_name: Maartje
last_name: Elsenaar
middle_names: []
temporal:
- start: 1286
  end: 1337
  type: life_span
- start: 1304
  end: 1320
  type: flourished
titles: []
extra_info: []
assistant