What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Patricia is a scientist if and only if it is sunny. Patricia is not a scientist. It is sunny if and only if Linda is a poet. Linda is a poet or Patricia is making tea.
If Patricia were a scientist, then it is sunny. If it is sunny, then Linda is a poet. If it is sunny, then Patricia is a scientist. If Linda were a poet, then it is sunny. It is not sunny.