Consider the following premises. If David reads a book, then Robert is curious. Robert is playing squash or David is reading a book. For all y, if y plays squash, then y is curious. Can we infer the following from them? Robert is not curious.
 From the fact that for all y, if y plays squash, then y is curious we can infer that if Robert plays squash, then Robert is curious. Finally, from the fact that if Robert plays squash, then Robert is curious, that if David reads a book, then Robert is curious, and that Robert is playing squash or David is reading a book we can infer that Robert is curious, which contradicts that Robert is not curious. Therefore, the answer is no.