Environment is a type of Region. South is a type of Region. South is related to Pole. Pole is a type of European. 
Cloth is a synonym of Material. Builder is a type of Material. Builder is related to Worker. Astronomer is a type of Worker. 
Environment --IsA--> Region <--IsA-- South <--RelatedTo--> Pole --IsA--> European 
Cloth <--Synonym--> Material <--IsA-- Builder <--RelatedTo--> Worker <--IsA-- Astronomer 