A user maintains information on all of her customers, at the bare minimum their names: myCust:john, myCust:hasName, "Johnny Pesky" myCust:aaron, myCust:hasName, "Aaron Boone" myCust:bill, myCust:hasName, "Bill Buckner" Customers are encouraged to fill in surveys with questions about their interests. Among the questions asked is "Will you be purchasing a lawnmower in the next twelve months?" Not all customers answered the question: myCust:john, myCust:willBuyMower, "false"^^xsd:boolean myCust:aaron, myCust:willBuyMower, "true"^^xsd:boolean (note that additional data is available for myCust::bill) RS-3a: The user wishes to find the names of all customers who plan on buying a mower. RS-3b: The user wishes to find the names of all customers who do not plan on buying a mower. RS-3c: The user wishes to find the names of all customers who *might* plan on buying a mower. Saying "no" on the survey disqualifies people from this group.Received on Thursday, 18 March 2004 15:45:41 UTC
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