Consider the following premises. For all x_12, x_12 will make tea. For all x_12, if x_12 plays squash, then x_12 is playing a game. For all x_12, if x_12 were an office clerk, then x_12 is playing a game. There is at least one x_12 for which x_12 will not climb a mountain or x_12 is an office clerk. For all x_12, x_12 will climb a mountain or x_12 will play squash. Can we infer the following from them? There is at least one x_12 for which x_12 will make tea and x_12 will play a game.
 From the fact that for all x_12, x_12 will climb a mountain or x_12 will play squash, and that there is at least one x_12 for which x_12 will not climb a mountain or x_12 is an office clerk we can infer that there is at least one x_12 for which x_12 will play squash or x_12 is an office clerk. From the fact that for all x_12, if x_12 plays squash, then x_12 is playing a game, that for all x_12, if x_12 were an office clerk, then x_12 is playing a game, and that there is at least one x_12 for which x_12 will play squash or x_12 is an office clerk we can infer that there is at least one x_12 for which x_12 will play a game. Finally, from the fact that for all x_12, x_12 will make tea, and that there is at least one x_12 for which x_12 will play a game we can infer that there is at least one x_12 for which x_12 will make tea and x_12 will play a game. Therefore, the answer is yes.