Alternatively, the electronic device 112 can search the feature index to determine whether {HEAD ~ the item} is contained in {TAIL ~ the sensor data} 
is contained in
Alternatively , the electronic device 112 can search the feature index to determine whether { HEAD ~ the item } is contained in { TAIL ~ the sensor data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL