Parse this person name:

Jennifer Stephens, 1703-1775, flourished 1729-1749
user
first_name: Jennifer
last_name: Stephens
middle_names: []
temporal:
- start: 1703
  end: 1775
  type: life_span
- start: 1729
  end: 1749
  type: flourished
titles: []
extra_info: []
assistant