Psychologist is related to Head. Mouth is part of Head. you are likely to find Fruit in/at/on Mouth. you are likely to find Fruit in/at/on Tree. 
Hour is related to Grain. Grain is a synonym of Crystal. 
Psychologist <--RelatedTo--> Head <--PartOf-- Mouth <--AtLocation-- Fruit --AtLocation--> Tree 
Hour <--RelatedTo--> Grain <--Synonym--> Crystal 