Other is related to Eye. Eye is related to Limb. Thigh is a type of Limb. 
Shareholder is a type of Investor. Bull is a type of Investor. Bull is a type of Policeman. Policeman is related to Officer. 
Other <--RelatedTo--> Eye <--RelatedTo--> Limb <--IsA-- Thigh 
Shareholder --IsA--> Investor <--IsA-- Bull --IsA--> Policeman <--RelatedTo--> Officer 