Consider the following premises. For all x_17, x_17 is an electrician or x_17 is not an astronaut. Linda is happy. For all x_17, x_17 is a nurse or x_17 is a poet. For all x_17, if x_17 were a poet, then x_17 is an electrician. For all x_17, x_17 is not a nurse or x_17 is an astronaut. Can we infer the following from them? For all x_17, either x_17 is happy or x_17 is an electrician are not true.
 From the fact that for all x_17, x_17 is an electrician or x_17 is not an astronaut we can infer that for all x_17, if x_17 were an astronaut, then x_17 is an electrician. From the fact that Linda is happy we can infer that there is at least one x_17 for which x_17 is happy. From the fact that for all x_17, x_17 is a nurse or x_17 is a poet, and that for all x_17, x_17 is not a nurse or x_17 is an astronaut we can infer that for all x_17, x_17 is a poet or x_17 is an astronaut. From the fact that for all x_17, if x_17 were a poet, then x_17 is an electrician, that for all x_17, if x_17 were an astronaut, then x_17 is an electrician, and that for all x_17, x_17 is a poet or x_17 is an astronaut we can infer that for all x_17, x_17 is an electrician. Finally, from the fact that there is at least one x_17 for which x_17 is happy, and that for all x_17, x_17 is an electrician we can infer that there is at least one x_17 for which x_17 is happy and x_17 is an electrician, which contradicts that For all x_17, either x_17 is happy or x_17 is an electrician are not true. Therefore, the answer is no.