Parse this person name:

Jennifer Tony Karen U. G. Cantu, Sarahside, flourished 1941-1959
user
first_name: Jennifer
last_name: Cantu
middle_names:
- Tony
- Karen
- U.
- G.
temporal:
- start: 1941
  end: 1959
  type: flourished
titles: []
extra_info:
- Sarahside
assistant