Lead is related to Captain. Captain is a type of Officer. 
Tight is a different concept from Loose. Loose is the opposite of Firm. Firm is related to Lawyer. Lawyer is related to Attorney. 
Lead <--RelatedTo--> Captain --IsA--> Officer 
Tight <--DistinctFrom--> Loose <--Antonym--> Firm <--RelatedTo--> Lawyer <--RelatedTo--> Attorney 