DL QUERY : Pizza Ontology : Is there a way to get the toppings ON the pizza?

Question

I'm extremely new to protoge' and I've been playing around with the pizza ontology.

I know how to get the list of pizza's that contain a certain number or type or toppings but how do I do it the OTHER way around?

How do I get a list of toppings that a certain pizza has? Or do I have to use SPARQL for such a query?

For example: All the toppings on an American Pizza.

I tried "isToppingOf some American" and it doesn't seem to be working.

I had thought that it should work since isToppingOf is the inverse of hasTopping..but maybe I'm misunderstanding?

Thanks!!