Parse this person name:

Justin Johnson (1716-1756, flourished 1744-1751)
user
first_name: Justin
last_name: Johnson
middle_names: []
temporal:
- start: 1716
  end: 1756
  type: life_span
- start: 1744
  end: 1751
  type: flourished
titles: []
extra_info: []
assistant