text: There are no mandatory naming conventions for OWL entities. In chapter 7, we will discuss 
  names and labels in more detail. A best practice is to select one set of naming conventions and 
  then abide by that convention across your organization. For this tutorial we will follow the 
  standard where class and individual names start with a capital letter for each word and do not 
  contain spaces. This is known as CamelBack notation. For example: Pizza, PizzaTopping, 
  etc. Also, we will follow the standard that class names are always singular rather than plural. 
  E.g., Pizza rather than Pizzas, PizzaTopping rather than PizzaToppings. 