Content is a type of Proportion. Proportion is a synonym of Ratio. Productivity is a type of Ratio. Productivity is derived from Produce. 
Deal is related to Play. Cover is a type of Play. Cover is related to Cloud. Cloud is related to Phenomenon. 
Content --IsA--> Proportion <--Synonym--> Ratio <--IsA-- Productivity --DerivedFrom--> Produce 
Deal <--RelatedTo--> Play <--IsA-- Cover <--RelatedTo--> Cloud <--RelatedTo--> Phenomenon 