qep'a' 30 - During the event, a leak caused water to come from the ceiling. While describing this to Dr. Okrand, I (qurgh) said "The ceiling rained" and he replied by saying that expression would be how SIS should be used. We established that the subject of SIS, and other weather verbs, is the source of that activity. In the case of SIS this could be muD, 'eng, or pa' beb.