Consider the following premises. For all x_7, x_7 is not a scientist or x_7 will play a game. For all x_7, if x_7 were a lawyer, then x_7 is making tea. There is at least one x_7 for which x_7 is a scientist or x_7 is a lawyer. For all x_7, x_7 will make tea if and only if x_7 will play a game. Can we infer the following from them? For all x_7, x_7 will not make tea.
 From the fact that for all x_7, x_7 will make tea if and only if x_7 will play a game we can infer that for all x_7, if x_7 plays a game, then x_7 is making tea. From the fact that there is at least one x_7 for which x_7 is a scientist or x_7 is a lawyer, and that for all x_7, x_7 is not a scientist or x_7 will play a game we can infer that there is at least one x_7 for which x_7 is a lawyer or x_7 will play a game. Finally, from the fact that for all x_7, if x_7 were a lawyer, then x_7 is making tea, that for all x_7, if x_7 plays a game, then x_7 is making tea, and that there is at least one x_7 for which x_7 is a lawyer or x_7 will play a game we can infer that there is at least one x_7 for which x_7 will make tea, which contradicts that For all x_7, x_7 will not make tea. Therefore, the answer is no.