text: The GUI for entering properties is also similar to that for entering classes. The first icon with one box 
  under another creates a sub-property of the selected property. The second icon showing two boxes at the 
  same level creates a sibling property to the selected property and the icon with an X through a box deletes 
  the selected property. 
  
  **Exercise 9: Create some properties**
  
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  1. Select the Object properties sub-tab of the Entities tab (see figure 4.11). 
  
  2. Make sure owl:topObjectProperty is selected**.**Click on the nested box icon at the left to create a 
  new sub-property of owl:topObjectProperty. When prompted for the name of the new property 
  type in hasIngredient. 
  
  3. Just as you can use a wizard to create multiple classes you can also use one to create multiple 
  properties. Select hasIngredient and then select Tools>Create object property hierarchy. Enter the new 
  property names hasTopping and hasBase. Select Continue and accept the default that the object properties 
  are*not*disjoint. 
  
  4. Synchronize the reasoner. Your window should now look like figure 4.11. 