context: Shelf is located at bookstore. Paper is located at shelf. Bookstore is located at shop mall. Paper cannot have a location of american continent. Pen cannot have a location of pumpkin patch. Lawnmowers cannot have a location of ticket office. Can is located at shelf. Pen cannot have a location of american continent. Paperback book is located at bookstore. Lawnmowers cannot have a location of shop mall. Pen cannot have a location of paper. Learn centre is located at ticket office.
text: Shelf cannot have a location of shop mall.