Consider the following premises. For all x_14, x_14 will take a plane or x_14 is a lawyer. There is at least one x_14 for which x_14 will play a game if and only if x_14 is a lawyer. For all x_14, if x_14 plays a game, then x_14 is playing tennis. For all x_14, if x_14 takes a plane, then x_14 is playing a game. Can we infer the following from them? There is at least one x_14 for which x_14 will play tennis.
 From the fact that there is at least one x_14 for which x_14 will play a game if and only if x_14 is a lawyer we can infer that there is at least one x_14 for which if x_14 were a lawyer, then x_14 is playing a game. From the fact that for all x_14, if x_14 takes a plane, then x_14 is playing a game, that there is at least one x_14 for which if x_14 were a lawyer, then x_14 is playing a game, and that for all x_14, x_14 will take a plane or x_14 is a lawyer we can infer that there is at least one x_14 for which x_14 will play a game. Finally, from the fact that for all x_14, if x_14 plays a game, then x_14 is playing tennis, and that there is at least one x_14 for which x_14 will play a game we can infer that there is at least one x_14 for which x_14 will play tennis. Therefore, the answer is yes.