The processing unit analyzes the sensor data to determine {HEAD ~ features} of the sensor data such as the subject, the time, {TAIL ~ the location}, the object, the event, and the action in the sensor data 
The processing unit analyzes the sensor data to determine { HEAD ~ features } of the sensor data such as the subject , the time , { TAIL ~ the location } , the object , the event , and the action in the sensor data
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH