Consider the following premises. There is at least one x_10 for which x_10 is curious if and only if x_10 is excited. For all x_10, if x_10 were a janitor, then x_10 is fast. For all x_10, if x_10 were curious, then x_10 is a janitor. Can we infer the following from them? For all x_10, the fact that x_10 were excited does not imply that x_10 is fast.
That contradicts the premises. Therefore the answer is no.