you are likely to find Mouth in/at/on Human. Mouth is related to Cigarette. 
Observe is related to See. Oversee is derived from See. Oversee is a type of Administer. 
Human <--AtLocation-- Mouth <--RelatedTo--> Cigarette 
Observe <--RelatedTo--> See <--DerivedFrom-- Oversee --IsA--> Administer 