Rule R2 of 122 instructs the mashup to fetch {HEAD ~ some recent news articles} from {TAIL ~ a designated news source}, such as the Wall Street Journal, and cache them at browser cache 132 
from
Rule R2 of 122 instructs the mashup to fetch { HEAD ~ some recent news articles } from { TAIL ~ a designated news source } , such as the Wall Street Journal , and cache them at browser cache 132
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH