What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Patricia is curious if and only if it is overcast. Richard is an office clerk. If it is overcast, then it is snowing. It is not snowing.
It is not overcast. Richard is an office clerk and it is not snowing. It is not snowing and Richard is an office clerk. If Patricia were curious, then it is overcast. If it is overcast, then Patricia is curious.