Consider the following premises. For all x_14, x_14 is a lawyer or x_14 will not play tennis. Elisabeth is not a lawyer. If Elisabeth were a lawyer, then Elisabeth is playing tennis. Can we infer the following from them? Elisabeth is not playing tennis.
 From the fact that for all x_14, x_14 is a lawyer or x_14 will not play tennis we can infer that for all x_14, if x_14 plays tennis, then x_14 is a lawyer. From the fact that for all x_14, if x_14 plays tennis, then x_14 is a lawyer we can infer that if Elisabeth plays tennis, then Elisabeth is a lawyer. From the fact that if Elisabeth were a lawyer, then Elisabeth is playing tennis, and that if Elisabeth plays tennis, then Elisabeth is a lawyer we can infer that Elisabeth is a lawyer if and only if Elisabeth is playing tennis. From the fact that Elisabeth is a lawyer if and only if Elisabeth is playing tennis we can infer that if Elisabeth plays tennis, then Elisabeth is a lawyer. Finally, from the fact that if Elisabeth plays tennis, then Elisabeth is a lawyer, and that Elisabeth is not a lawyer we can infer that Elisabeth is not playing tennis. Therefore, the answer is yes.