human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Representative, Title, Presentation of Credentials, Termination of Mission, Appointed by
###Question: What is the Termination of Mission date for Marsha E. Barnes, the Ambassador Extraordinary and Plenipotentiary?
gpt
SELECT Termination of Mission FROM table WHERE Title = ambassador extraordinary and plenipotentiary AND Representative = marsha e. barnes