Alarm is a type of Signal. Signal is similar to Impressive. Impressive is similar to Grand. Grand is similar to Large. 
West is a type of Location. Region is a type of Location. Inside is a type of Region. 
Alarm --IsA--> Signal <--SimilarTo--> Impressive <--SimilarTo--> Grand <--SimilarTo--> Large 
West --IsA--> Location <--IsA-- Region <--IsA-- Inside 