What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Richard is drinking water if and only if James is curious. Elisabeth is a server if and only if James is curious. If Richard drinks water, then Elisabeth is a server.
If Richard drinks water, then James is curious. If Elisabeth were a server, then James is curious. If James were curious, then Richard is drinking water. If James were curious, then Elisabeth is a server.