Fiber is a type of Material. Material is related to Chair. Chair can be used for People. 
Dirty is a synonym of Soil. Soil is a synonym of Territory. Territory is a synonym of District. District is a synonym of Quarter. 
Fiber --IsA--> Material <--RelatedTo--> Chair --UsedFor--> People 
Dirty <--Synonym--> Soil <--Synonym--> Territory <--Synonym--> District <--Synonym--> Quarter 