Send is a synonym of Station. Station is related to Pump. Pump is related to Inflation. 
Ceremony is related to Event. Convention is a type of Event. Convention is a synonym of Rule. 
Send <--Synonym--> Station <--RelatedTo--> Pump <--RelatedTo--> Inflation 
Ceremony <--RelatedTo--> Event <--IsA-- Convention <--Synonym--> Rule 