Parse this person name:

Marietta Salz (1235-1277, flourished 1253-1272)
user
first_name: Marietta
last_name: Salz
middle_names: []
temporal:
- start: 1235
  end: 1277
  type: life_span
- start: 1253
  end: 1272
  type: flourished
titles: []
extra_info: []
assistant