Parse this person name:

Alexa Massey (1240-1314, flourished 1255-1285)
user
first_name: Alexa
last_name: Massey
middle_names: []
temporal:
- start: 1240
  end: 1314
  type: life_span
- start: 1255
  end: 1285
  type: flourished
titles: []
extra_info: []
assistant