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: Elisabeth is drinking water if and only if James is a poet. Linda is climbing a mountain or James is a poet. Elisabeth is not drinking water. Linda is not climbing a mountain or it is windy.
James is a poet or it is windy can be inferred via the resolution rule. If Elisabeth drinks water, then James is a poet can be inferred via the biconditional elimination rule. If James were a poet, then Elisabeth is drinking water can be inferred via the biconditional elimination rule. James is not a poet can be inferred via the biconditional elimination rule.