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_14 for which x_14 is not curious. For all x_14, x_14 is an astronaut if and only if x_14 will go running. For all x_14, x_14 is curious if and only if x_14 is an astronaut. For all x_14, x_14 will go running if and only if x_14 is a server.
For all x_14, if x_14 were an astronaut, then x_14 is running can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 were curious, then x_14 is an astronaut can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 goes running, then x_14 is a server can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 goes running, then x_14 is an astronaut can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 were an astronaut, then x_14 is curious can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 were a server, then x_14 is running can be inferred via the universal biconditional elimination rule. There is at least one x_14 for which x_14 is not an astronaut can be inferred via the existential biconditional elimination rule.