What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: Susan is playing a game or Joseph is a carpenter. If James were sad, then Susan is not making tea. If Joseph were a carpenter, then Susan is making tea. For all x_16, x_16 will play a game if and only if x_16 will make tea.
For all x_16, if x_16 plays a game, then x_16 is making tea can be inferred via the universal biconditional elimination rule. For all x_16, if x_16 makes tea, then x_16 is playing a game can be inferred via the universal biconditional elimination rule.