What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 is a mechanic or x_15 is bored. For all x_15, x_15 will work if and only if x_15 is bored. For all x_15, if x_15 were fast, then x_15 is making tea. For all x_15, x_15 is not a mechanic or x_15 is fast. For all x_15, if x_15 works, then x_15 is an electrician. There is at least one x_15 for which if x_15 were an electrician, then x_15 is making tea.
There is at least one x_15 for which if x_15 works, then x_15 is making tea. For all x_15, x_15 is bored or x_15 is fast. For all x_15, if x_15 works, then x_15 is bored. For all x_15, if x_15 were bored, then x_15 is working.