Parse this person name:

Mary Carson (1251-1302, flourished 1268-1278)
user
first_name: Mary
last_name: Carson
middle_names: []
temporal:
- start: 1251
  end: 1302
  type: life_span
- start: 1268
  end: 1278
  type: flourished
titles: []
extra_info: []
assistant