Engine is a type of Instrument. Instrument is related to Clock. Clock is related to Category. 
Oven is similar to Range. Range is related to Ground. Ground is related to Style. 
Engine --IsA--> Instrument <--RelatedTo--> Clock <--RelatedTo--> Category 
Oven <--SimilarTo--> Range <--RelatedTo--> Ground <--RelatedTo--> Style 