Passage is a type of Structure. Sail is a type of Structure. Sail is related to Cloth. 
Guest is a type of Visitor. Visitor is related to Tourist. Tourist is related to Ruin. 
Passage --IsA--> Structure <--IsA-- Sail <--RelatedTo--> Cloth 
Guest --IsA--> Visitor <--RelatedTo--> Tourist <--RelatedTo--> Ruin 