What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is rich. For all x_11, x_11 will cook or x_11 is sad. For all x_11, x_11 is not a carpenter. For all x_11, x_11 will cook if and only if x_11 is a carpenter.
For all x_11, if x_11 cooks, then x_11 is a carpenter. For all x_11, if x_11 were a carpenter, then x_11 is cooking. For all x_11, x_11 will not cook.