Consider the following premises. There is at least one x_8 for which x_8 is not a carpenter. For all x_8, if x_8 were a carpenter, then x_8 is making tea. For all x_8, x_8 is sad if and only if x_8 is a carpenter. For all x_8, if x_8 makes tea, then x_8 is sad. Can we infer the following from them? For all x_8, x_8 will make tea.
 From the fact that for all x_8, x_8 is sad if and only if x_8 is a carpenter we can infer that for all x_8, if x_8 were sad, then x_8 is a carpenter. From the fact that for all x_8, if x_8 makes tea, then x_8 is sad, and that for all x_8, if x_8 were sad, then x_8 is a carpenter we can infer that for all x_8, if x_8 makes tea, then x_8 is a carpenter. From the fact that for all x_8, if x_8 were a carpenter, then x_8 is making tea, and that for all x_8, if x_8 makes tea, then x_8 is a carpenter we can infer that for all x_8, x_8 is a carpenter if and only if x_8 will make tea. Finally, from the fact that for all x_8, x_8 is a carpenter if and only if x_8 will make tea, and that there is at least one x_8 for which x_8 is not a carpenter we can infer that there is at least one x_8 for which x_8 will not make tea, which contradicts that For all x_8, x_8 will make tea. Therefore, the answer is no.