Sharp is a synonym of Smart. Smart is similar to Automatic. Automatic is related to Rifle. 
Outer is related to Shoe. Shoe is related to Thick. Thick is a synonym of Solid. Flower can be Solid. 
Sharp <--Synonym--> Smart <--SimilarTo--> Automatic <--RelatedTo--> Rifle 
Outer <--RelatedTo--> Shoe <--RelatedTo--> Thick <--Synonym--> Solid <--HasProperty-- Flower 