Base is etymologically related to Bar. Bar is related to Examination. 
Shareholder is a type of Investor. Investor is derived from Invest. Speculate is a type of Invest. 
Base --EtymologicallyRelatedTo--> Bar <--RelatedTo--> Examination 
Shareholder --IsA--> Investor --DerivedFrom--> Invest <--IsA-- Speculate 