Consider the following premises. For all x_14, x_14 will climb a mountain or x_14 will not go running. For all x_14, x_14 will play a game if and only if x_14 will go running. For all x_14, x_14 is excited if and only if x_14 will climb a mountain. There is at least one x_14 for which x_14 is excited or x_14 will play a game. Can we infer the following from them? There is at least one x_14 for which x_14 will climb a mountain.
 From the fact that for all x_14, x_14 will climb a mountain or x_14 will not go running we can infer that for all x_14, if x_14 goes running, then x_14 is climbing a mountain. From the fact that for all x_14, x_14 will play a game if and only if x_14 will go running we can infer that for all x_14, if x_14 plays a game, then x_14 is running. From the fact that for all x_14, x_14 is excited if and only if x_14 will climb a mountain we can infer that for all x_14, if x_14 were excited, then x_14 is climbing a mountain. From the fact that for all x_14, if x_14 plays a game, then x_14 is running, and that for all x_14, if x_14 goes running, then x_14 is climbing a mountain we can infer that for all x_14, if x_14 plays a game, then x_14 is climbing a mountain. Finally, from the fact that for all x_14, if x_14 were excited, then x_14 is climbing a mountain, that for all x_14, if x_14 plays a game, then x_14 is climbing a mountain, and that there is at least one x_14 for which x_14 is excited or x_14 will play a game we can infer that there is at least one x_14 for which x_14 will climb a mountain. Therefore, the answer is yes.