Material is related to Floor. Floor is related to Main. Main is related to Common. 
Block is related to Writing. one thing you do when you Writing is Thinking. Thinking is a synonym of Intelligent. 
Material <--RelatedTo--> Floor <--RelatedTo--> Main <--RelatedTo--> Common 
Block <--RelatedTo--> Writing --HasSubevent--> Thinking <--Synonym--> Intelligent 