Parse this person name:

Justin Martinez (1704-1756, flourished 1720-1750)
user
first_name: Justin
last_name: Martinez
middle_names: []
temporal:
- start: 1704
  end: 1756
  type: life_span
- start: 1720
  end: 1750
  type: flourished
titles: []
extra_info: []
assistant