What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_11 for which if x_11 works, then x_11 is writing a letter. For all x_11, if x_11 writes a letter, then x_11 is an artist. For all x_11, if x_11 were a carpenter, then x_11 is a lawyer. For all x_11, if x_11 were a lawyer, then x_11 is working. For all x_11, if x_11 were a nurse, then x_11 is a lawyer. For all x_11, x_11 is a nurse or x_11 is a carpenter.
For all x_11, if x_11 were a carpenter, then x_11 is working. For all x_11, if x_11 were a nurse, then x_11 is working. There is at least one x_11 for which if x_11 works, then x_11 is an artist. There is at least one x_11 for which if x_11 were a lawyer, then x_11 is writing a letter. For all x_11, x_11 is a lawyer.