What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_21, x_21 will climb a mountain or x_21 will go running. For all x_21, x_21 will make tea if and only if x_21 is sad. For all x_21, if x_21 climbs a mountain, then x_21 is making tea. For all x_21, if x_21 goes running, then x_21 is making tea.
For all x_21, x_21 will make tea. For all x_21, if x_21 makes tea, then x_21 is sad. For all x_21, if x_21 were sad, then x_21 is making tea.