Impressive is similar to Effective. Effective is related to Useful. Useful is related to Bag. 
Sharp is related to Salt. Salt is related to Shake. Shake is related to Bake. Fire is a type of Bake. 
Impressive <--SimilarTo--> Effective <--RelatedTo--> Useful <--RelatedTo--> Bag 
Sharp <--RelatedTo--> Salt <--RelatedTo--> Shake <--RelatedTo--> Bake <--IsA-- Fire 