Computer is related to Lap. Lap is related to Knee. 
Pack is a type of Load. Load is a different concept from Quiet. Person wants (to) Quiet. Person does not want (to) Anxiety. 
Computer <--RelatedTo--> Lap <--RelatedTo--> Knee 
Pack --IsA--> Load <--DistinctFrom--> Quiet <--Desires-- Person --NotDesires--> Anxiety 