Disappointment is related to Fail. Crash is a type of Fail. Computer can Crash. 
Doctor is related to Sick. Sick is related to Cold. Cold is related to Cash. 
Disappointment <--RelatedTo--> Fail <--IsA-- Crash <--CapableOf-- Computer 
Doctor <--RelatedTo--> Sick <--RelatedTo--> Cold <--RelatedTo--> Cash 