{HEAD ~ The Java APIs} also support searching on the result of a previous search and {TAIL ~ searching} involving heterogeneous datastores 
support
{ HEAD ~ The Java APIs } also support searching on the result of a previous search and { TAIL ~ searching } involving heterogeneous datastores
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH