Consider the following premises. For all x_12, x_12 is a sailor or x_12 will make tea. For all x_12, if x_12 were a sailor, then x_12 is an office clerk. There is at least one x_12 for which x_12 is an office clerk or x_12 will not make tea. Can we infer the following from them? There is at least one x_12 for which x_12 is an office clerk or x_12 will not make tea.
That is one of the premises. Therefore, the answer is yes.