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