What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Thomas writes a letter, then it is overcast. It is cold or James is not bored. If it is cloudy, then James is bored. If it is overcast, then it is cold. It is cloudy or Thomas is writing a letter.
If Thomas writes a letter, then it is cold. If James were bored, then it is cold.