What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, x_10 is rich or x_10 is a carpenter. If Karen were a carpenter, then Thomas is a cashier. For all x_10, x_10 is not rich or x_10 will climb a mountain. Karen is climbing a mountain if and only if Thomas is a cashier.
If Karen climbs a mountain, then Thomas is a cashier. If Thomas were a cashier, then Karen is climbing a mountain. For all x_10, x_10 is a carpenter or x_10 will climb a mountain.