Consider the following premises. It is overcast or Robert is making tea. For all x_14, if x_14 makes tea, then x_14 is a sailor. If it is overcast, then Robert is a sailor. Can we infer the following from them? Robert is a sailor or David is cooking.
 From the fact that for all x_14, if x_14 makes tea, then x_14 is a sailor we can infer that if Robert makes tea, then Robert is a sailor. From the fact that if it is overcast, then Robert is a sailor, that if Robert makes tea, then Robert is a sailor, and that it is overcast or Robert is making tea we can infer that Robert is a sailor. Finally, from the fact that Robert is a sailor we can infer that Robert is a sailor or David is cooking. Therefore, the answer is yes.