Sound is related to Hearing. Hearing is related to Ear. Ear is related to Receiver. 
Elect is related to Win. Win is a synonym of Victory. Victory is a type of Single. Roof is a type of Single. 
Sound <--RelatedTo--> Hearing <--RelatedTo--> Ear <--RelatedTo--> Receiver 
Elect <--RelatedTo--> Win <--Synonym--> Victory --IsA--> Single <--IsA-- Roof 