Doctor can be used for Diagnose. you are likely to find Soap in/at/on Doctor. Soap is related to Block. Block is a synonym of Stuff. 
Tax is related to Percentage. Percentage is related to Interest. Interesting is derived from Interest. Stuff can be Interesting. 
Diagnose <--UsedFor-- Doctor <--AtLocation-- Soap <--RelatedTo--> Block <--Synonym--> Stuff 
Tax <--RelatedTo--> Percentage <--RelatedTo--> Interest <--DerivedFrom-- Interesting <--ReceivesAction-- Stuff 