Task: Question Generation
Input (English): Context : São Tomé and Príncipe Saudi Arabia Serbia Seychelles South Sudan Sierra Leone Slovenia Somalia Soviet Union Sudan Suriname Sweden A small number of AKM's are used by the Swedish Armed Forces for familiarization training, but they are not issued to combat units. 
Subject : AKM 
Relation : service entry
Output (English): What year was the service entry date for AKM?