Parse this person name:

Alvin Johnson (1701-1743, flourished 1718-1738)
user
first_name: Alvin
last_name: Johnson
middle_names: []
temporal:
- start: 1701
  end: 1743
  type: life_span
- start: 1718
  end: 1738
  type: flourished
titles: []
extra_info: []
assistant