Parse this person name:

Sean Sanchez (1719-1784, flourished 1744-1771)
user
first_name: Sean
last_name: Sanchez
middle_names: []
temporal:
- start: 1719
  end: 1784
  type: life_span
- start: 1744
  end: 1771
  type: flourished
titles: []
extra_info: []
assistant