What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If William were an artist, then Jessica is playing squash. If James were a cashier, then William is an artist. If James makes tea, then James is a cashier. If Jessica plays squash, then James is making tea.
If William were an artist, then James is making tea. If James were a cashier, then Jessica is playing squash. If James makes tea, then William is an artist. If Jessica plays squash, then James is a cashier.