Buy is related to Cost. Cost is related to Original. Original is a synonym of Pilot. 
Split is a type of Bottle. Bottle is a synonym of Nerve. Nerve is a synonym of Foster. 
Buy <--RelatedTo--> Cost <--RelatedTo--> Original <--Synonym--> Pilot 
Split --IsA--> Bottle <--Synonym--> Nerve <--Synonym--> Foster 