What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, x_10 will take a plane or x_10 will drive a car. William is driving a car if and only if it is sunny. It is not sunny. For all x_10, x_10 will not take a plane or x_10 will cook.
If William drives a car, then it is sunny. If it is sunny, then William is driving a car. William is not driving a car. For all x_10, x_10 will drive a car or x_10 will cook.