Consider the following premises. Mary is a lawyer or David is not curious. Karen is a bartender if and only if David is curious. Mary is not a lawyer. Can we infer the following from them? Karen is not a bartender.
 From the fact that Mary is a lawyer or David is not curious we can infer that if David were curious, then Mary is a lawyer. From the fact that if David were curious, then Mary is a lawyer, and that Mary is not a lawyer we can infer that David is not curious. Finally, from the fact that Karen is a bartender if and only if David is curious, and that David is not curious we can infer that Karen is not a bartender. Therefore, the answer is yes.