Develop is a type of Create. Develop is a synonym of Expand. Expand is a synonym of Boom. 
Emission is a type of Flow. Emission is related to Car. Car is related to Device. Device is related to Plot. 
Create <--IsA-- Develop <--Synonym--> Expand <--Synonym--> Boom 
Flow <--IsA-- Emission <--RelatedTo--> Car <--RelatedTo--> Device <--RelatedTo--> Plot 