It is particularly preferred that proximity be used as the property, because the time difference between two images can be set in such a way that the cell has not moved out the immediate vicinity of {HEAD ~ its position} in {TAIL ~ the first image} by the time the second image is made 
in
It is particularly preferred that proximity be used as the property , because the time difference between two images can be set in such a way that the cell has not moved out the immediate vicinity of { HEAD ~ its position } in { TAIL ~ the first image } by the time the second image is made
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH