Water is related to Necessity. Necessity is related to Turn. Turn is related to Half. 
Shrink is a synonym of Decrease. Vanish is a type of Decrease. Vanish is a synonym of Fly. Fly is related to Believe. 
Water <--RelatedTo--> Necessity <--RelatedTo--> Turn <--RelatedTo--> Half 
Shrink <--Synonym--> Decrease <--IsA-- Vanish <--Synonym--> Fly <--RelatedTo--> Believe 