Sentence:  Nevertheless, some subtle market forces are at work which pressure the canny shopkeeper into giving up valuable shelf space to the contents of an <WSD>Oompa Loompa's</WSD> cocktail cabinet. 
Meaning of the word marked with <WSD> tags:  Any of the fictional dwarves who manufacture candy and sarcastically dispense songs of advice in Roald Dahl's "Charlie and the Chocolate Factory".