What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: It is late or Patricia is reading a book. If Elisabeth climbs a mountain, then Linda is listening to a song. It is not late or it is overcast. If it is overcast, then Linda is listening to a song. Patricia is not reading a book or Elisabeth is climbing a mountain.
Patricia is reading a book or it is overcast can be inferred via the resolution rule.