Review is a type of Exercise. Review is a synonym of Reinforce. 
Strength is related to Proof. Proof is a type of Explanation. Explanation is related to Report. Report is related to Work. 
Exercise <--IsA-- Review <--Synonym--> Reinforce 
Strength <--RelatedTo--> Proof --IsA--> Explanation <--RelatedTo--> Report <--RelatedTo--> Work 