Image queries search on the content of {HEAD ~ image fields} for {TAIL ~ approximate match} with the given image search expressions, e.g., image with certain degree of similarity based on color percentages, layout, or texture 
for
Image queries search on the content of { HEAD ~ image fields } for { TAIL ~ approximate match } with the given image search expressions , e.g. , image with certain degree of similarity based on color percentages , layout , or texture
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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