Conversion is a type of Transformation. Transformation is a synonym of Operation. Operation is related to Patient. Patient is related to Wait. 
Lean is a synonym of Angle. Angle is a type of Space. 
Conversion --IsA--> Transformation <--Synonym--> Operation <--RelatedTo--> Patient <--RelatedTo--> Wait 
Lean <--Synonym--> Angle --IsA--> Space 