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: Barbara is not a politician. Richard is reading a book if and only if it is late. Linda is a soldier if and only if Richard is reading a book. Linda is a soldier if and only if Barbara is a politician.
If Richard reads a book, then it is late can be inferred via the biconditional elimination rule. If Linda were a soldier, then Richard is reading a book can be inferred via the biconditional elimination rule. If Linda were a soldier, then Barbara is a politician can be inferred via the biconditional elimination rule. If it is late, then Richard is reading a book can be inferred via the biconditional elimination rule. If Richard reads a book, then Linda is a soldier can be inferred via the biconditional elimination rule. If Barbara were a politician, then Linda is a soldier can be inferred via the biconditional elimination rule. Linda is not a soldier can be inferred via the biconditional elimination rule.