What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, if y were curious, then y is a writer. There is at least one y for which y is a writer if and only if y is a scientist. For all y, y is curious or y is a scientist.
There is at least one y for which if y were a writer, then y is a scientist. There is at least one y for which if y were a scientist, then y is a writer.