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: For all x_7, if x_7 makes tea, then x_7 is listening to a song. For all x_7, x_7 is not poor or x_7 is rich. For all x_7, x_7 will take a plane. For all x_7, if x_7 were rich, then x_7 is listening to a song. For all x_7, x_7 is poor or x_7 will make tea.
For all x_7, x_7 will make tea or x_7 is rich can be inferred via the universal resolution rule.