The system 11, the computer memory further comprising instructions that cause the computer system to learn {HEAD ~ user preferences} by analyzing {TAIL ~ previous user input}, and infer the potential full queries according to said learned user preferences 
The system 11 , the computer memory further comprising instructions that cause the computer system to learn { HEAD ~ user preferences } by analyzing { TAIL ~ previous user input } , and infer the potential full queries according to said learned user preferences
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH