If {HEAD ~ no address} was obtained by {TAIL ~ the reverse look} up, or the address was not verified by the zip code, then the caller is asked for his/her street name which is obtained by voice recognition or by operator involvement  
obtained by
If { HEAD ~ no address } was obtained by { TAIL ~ the reverse look } up , or the address was not verified by the zip code , then the caller is asked for his / her street name which is obtained by voice recognition or by operator involvement
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH