Pot is located at drawer. Killer cannot have a location of wait for bus. Furniture is located at house. Note cannot have a location of bar. Killer cannot have a location of house. Drawer is located at dresser. Envelope is located at drawer. Outside house is located at wait for bus. Letter is located at envelope. Dresser is located at house. Note cannot have a location of envelope. Envelope cannot have a location of sunny window. Note cannot have a location of sunny window.
Envelope cannot have a location of house.