human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Rocket, Country, Type, Launches, Successes, Failures, Partial failures
###Question: What is the number of successes for rockets that have more than 3 launches, were based in Russia, are type soyuz and a rocket type of soyuz-u?
gpt
SELECT COUNT Successes FROM table WHERE Launches > 3 AND Country = russia AND Type = soyuz AND Rocket = soyuz-u