human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Date, Type, Record description, Achievement, Pilot
###Question: Date of 23 september 1961, and a Pilot of b.v. zemskov had what record description?
gpt
SELECT Record description FROM table WHERE Date = 23 september 1961 AND Pilot = b.v. zemskov