Disclosed are {HEAD ~ methods} and systems for enabling {TAIL ~ analysis} of communication content while preserving confidentiality 
for enabling
Disclosed are { HEAD ~ methods } and systems for enabling { TAIL ~ analysis } of communication content while preserving confidentiality
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH