Tube is related to Bar. Bar is related to Level. Level is related to Heat. Heat is a synonym of Intensity. 
Pour is related to Water. Beer have Water. Beer is related to Bottle. Drinking requires Bottle. 
Tube <--RelatedTo--> Bar <--RelatedTo--> Level <--RelatedTo--> Heat <--Synonym--> Intensity 
Pour <--RelatedTo--> Water <--HasA-- Beer <--RelatedTo--> Bottle <--HasPrerequisite-- Drinking 