More particularly, information needed to provide an accurate assessment of data may require an analysis of {HEAD ~ data} from {TAIL ~ multiple sources} 
from
More particularly , information needed to provide an accurate assessment of data may require an analysis of { HEAD ~ data } from { TAIL ~ multiple sources }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL