text: 1. Remain in the Individuals by class tab. Click on MargheritaPizza1. You should see in the Description 
  view that it is an instance of MargheritaPizza. Now you will use the Property assertions view to set 
  the caloric content of MargheritaPizza1. This view can be used to set object and data properties. 
  
  2. Click on the (+) icon next to Data property assertions in the Property assertions view in the lower 
  right. 
  
  3. Use the pop-up window to select the data property hasCaloricContent. Then enter 263 as the value and 
  use the menu at the bottom to define the value’s datatype to be xsd:integer. Note: this is different than 
  what you did in exercise 27. In exercise 27 you defined the datatype for the*property*. Here you are 
  defining the datatype for*a specific value*. It would be nice if Protégé could just infer the datatypes for you 
  but because datatype definitions can be complex this is harder than it might seem so you need to make 
  sure to explicitly define the datatype for each value. As you get into more realistic ontologies you will 
  often use tools such as Cellfie (described in chapter 8) to load your individual data automatically and 
  those tools can automatically add datatype information for each individual as part of the loading process. 
  
  4. Your UI should now look similar to figure 5.5. Select OK to enter the new value. Run the reasoner. 
  
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