What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Joseph were a lawyer, then Patricia is working. If Joseph were a lawyer, then James is climbing a mountain. James is not climbing a mountain. If it is cold, then Joseph is a lawyer. If Patricia works, then it is cold.
Joseph is not a lawyer. If Joseph were a lawyer, then it is cold. If it is cold, then Patricia is working. If it is cold, then James is climbing a mountain. If Patricia works, then Joseph is a lawyer.