Task: Question Generation
Input (English): Context : Design started in the late 1970s at the Molniya design bureau in Ukraine on what would be their only air-to-ground munition, but when they moved exclusively to space work Vympel took over development of the Kh-29. 
Subject : Kh-29 
Relation : service entry
Output (English): What year was the service entry date for Kh-29?