Processing is related to Product. Product is related to Gas. 
Dedicate is a synonym of Devote. Devote is a synonym of Give. Give is related to Free. Free is related to Cheap. 
Processing <--RelatedTo--> Product <--RelatedTo--> Gas 
Dedicate <--Synonym--> Devote <--Synonym--> Give <--RelatedTo--> Free <--RelatedTo--> Cheap 