Cloud is related to Natural. Natural is related to Fuel. 
Money is related to Valuable. Valuable is similar to Worth. Worth is related to Assessment. Assessment is a synonym of Judgment. 
Cloud <--RelatedTo--> Natural <--RelatedTo--> Fuel 
Money <--RelatedTo--> Valuable <--SimilarTo--> Worth <--RelatedTo--> Assessment <--Synonym--> Judgment 