Barrel is related to Wooden. Wooden is related to Post. Post is related to Stick. 
Shock is related to Danger. Danger is related to Red. Red is a different concept from Yellow. Yellow is related to Bee. 
Barrel <--RelatedTo--> Wooden <--RelatedTo--> Post <--RelatedTo--> Stick 
Shock <--RelatedTo--> Danger <--RelatedTo--> Red <--DistinctFrom--> Yellow <--RelatedTo--> Bee 