What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, x_13 will play squash if and only if x_13 is a lawyer. For all x_13, if x_13 were a lawyer, then x_13 is not an electrician. For all x_13, x_13 will make tea or x_13 is an electrician. There is at least one x_13 for which x_13 will not make tea.
There is at least one x_13 for which x_13 is an electrician. For all x_13, if x_13 plays squash, then x_13 is a lawyer. For all x_13, if x_13 were a lawyer, then x_13 is playing squash.