Industrial is related to Steel. Steel is related to Man. Man is related to Art. you are likely to find Art in/at/on Fair. 
Thought is a type of Belief. Philosophy is a type of Belief. 
Industrial <--RelatedTo--> Steel <--RelatedTo--> Man <--RelatedTo--> Art --AtLocation--> Fair 
Thought --IsA--> Belief <--IsA-- Philosophy 