Consider the following premises. For all x_13, x_13 is a server or x_13 will take a plane. There is at least one x_13 for which x_13 is not a server. For all x_13, if x_13 works, then x_13 is not taking a plane. For all x_13, x_13 will cook if and only if x_13 will work. Can we infer the following from them? For all x_13, x_13 will cook.
 From the fact that for all x_13, x_13 is a server or x_13 will take a plane, and that there is at least one x_13 for which x_13 is not a server we can infer that there is at least one x_13 for which x_13 will take a plane. From the fact that for all x_13, if x_13 works, then x_13 is not taking a plane, and that there is at least one x_13 for which x_13 will take a plane we can infer that there is at least one x_13 for which x_13 will not work. Finally, from the fact that for all x_13, x_13 will cook if and only if x_13 will work, and that there is at least one x_13 for which x_13 will not work we can infer that there is at least one x_13 for which x_13 will not cook, which contradicts that For all x_13, x_13 will cook. Therefore, the answer is no.