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_5 for which x_5 is an artist. For all x_5, x_5 will go running. For all x_5, if x_5 were an artist, then x_5 is making tea.
There is at least one x_5 for which x_5 will make tea can be inferred via the existential modus ponens rule. There is at least one x_5 for which x_5 is an artist and x_5 will go running can be inferred via the existential conjunction rule. There is at least one x_5 for which x_5 will go running and x_5 is an artist can be inferred via the existential conjunction rule.