you are likely to find Computer in/at/on Classroom. Computer have Software. Gap is a type of Software. Gap is a type of Opening. 
Guidance is a synonym of Control. Control is related to Force. Force is a synonym of Random. Random is a different concept from Order. 
Classroom <--AtLocation-- Computer --HasA--> Software <--IsA-- Gap --IsA--> Opening 
Guidance <--Synonym--> Control <--RelatedTo--> Force <--Synonym--> Random <--DistinctFrom--> Order 