{HEAD ~ The clear borosilicate glass microsphere} offers {TAIL ~ no appreciable attenuation} of the emitted light 
offers
{ HEAD ~ The clear borosilicate glass microsphere } offers { TAIL ~ no appreciable attenuation } of the emitted light
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH