Parse this person name:

Mary Johnson, 1735-1804, flourished 1752-1768
user
first_name: Mary
last_name: Johnson
middle_names: []
temporal:
- start: 1735
  end: 1804
  type: life_span
- start: 1752
  end: 1768
  type: flourished
titles: []
extra_info: []
assistant