you are likely to find Chocolate in/at/on Mouth. Chocolate is related to Mud. you are likely to find Stick in/at/on Mud. Stick is a synonym of Cling. 
Carbon is related to Element. 
Mouth <--AtLocation-- Chocolate <--RelatedTo--> Mud <--AtLocation-- Stick <--Synonym--> Cling 
Carbon <--RelatedTo--> Element 