What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_18, x_18 is a nurse. For all x_18, if x_18 were a soldier, then x_18 is poor. There is at least one x_18 for which x_18 is a soldier or x_18 is a mechanic. For all x_18, if x_18 were a mechanic, then x_18 is making tea. For all x_18, x_18 will make tea if and only if x_18 is poor.
For all x_18, if x_18 makes tea, then x_18 is poor. For all x_18, if x_18 were poor, then x_18 is making tea.