Parse this person name:

Sven Becht (1464-1539, flourished 1483-1503)
user
first_name: Sven
last_name: Becht
middle_names: []
temporal:
- start: 1464
  end: 1539
  type: life_span
- start: 1483
  end: 1503
  type: flourished
titles: []
extra_info: []
assistant