Parse this person name:

Janna van der Strigt, 1339-1381, flourished 1369-1376
user
first_name: Janna
last_name: van der Strigt
middle_names: []
temporal:
- start: 1339
  end: 1381
  type: life_span
- start: 1369
  end: 1376
  type: flourished
titles: []
extra_info: []
assistant