Valley is a type of Depression. Valley is related to Pit. 
True is a synonym of Truth. Truth is related to Testimony. Testimony is related to Protest. Protest is related to Crowd. 
Depression <--IsA-- Valley <--RelatedTo--> Pit 
True <--Synonym--> Truth <--RelatedTo--> Testimony <--RelatedTo--> Protest <--RelatedTo--> Crowd 