What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is not sad. If Patricia plays a game, then Barbara is a sailor. For all x_11, x_11 is sad or x_11 is not a sailor.
For all x_11, if x_11 were a sailor, then x_11 is sad.