Skilled is related to Experienced. Experienced is the opposite of New. New is the opposite of Original. Original is a synonym of Prime. 
Station is related to Base. Base is related to Command. Command is related to Superior. 
Skilled <--RelatedTo--> Experienced <--Antonym--> New <--Antonym--> Original <--Synonym--> Prime 
Station <--RelatedTo--> Base <--RelatedTo--> Command <--RelatedTo--> Superior 