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: Jessica is not a poet. For all x_11, x_11 will play squash if and only if x_11 is a poet. It is sunny.
Jessica is not a poet and it is sunny can be inferred via the conjunction rule. It is sunny and Jessica is not a poet can be inferred via the conjunction rule. For all x_11, if x_11 plays squash, then x_11 is a poet can be inferred via the universal biconditional elimination rule. For all x_11, if x_11 were a poet, then x_11 is playing squash can be inferred via the universal biconditional elimination rule.