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_6 for which x_6 is a bartender or x_6 is sad. For all x_6, x_6 is an artist if and only if x_6 is sad. For all x_6, x_6 is not an artist. For all x_6, x_6 is not a bartender or x_6 will cook.
There is at least one x_6 for which x_6 is sad or x_6 will cook. For all x_6, if x_6 were an artist, then x_6 is sad. For all x_6, if x_6 were sad, then x_6 is an artist. For all x_6, x_6 is not sad.