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: There is at least one x_11 for which x_11 will cook. For all x_11, x_11 is a scientist.
There is at least one x_11 for which x_11 will cook and x_11 is a scientist can be inferred via the existential conjunction rule. Some scientists will cook can be inferred via the existential conjunction rule.