Consider the following premises. For all x_18, x_18 is a soldier if and only if x_18 is curious. For all x_18, x_18 is not curious. For all x_18, x_18 is a soldier or x_18 will go running. Can we infer the following from them? If we can, name the inference rule being used: For all y, neither y will go running nor y is happy.
That contradicts the premises. Therefore the answer is no.