What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all y, y is a writer or y is curious. For all y, if y were curious, then y is running. For all y, y will go running if and only if y is a musician. For all y, if y were a writer, then y is a musician.
For all y, if y goes running, then y is a musician can be inferred via the universal biconditional elimination rule. For all y, if y were a musician, then y is running can be inferred via the universal biconditional elimination rule.