determining, based on the metagraph, a type for a node of {HEAD ~ the given pair} of {TAIL ~ connected nodes} 
of
determining , based on the metagraph , a type for a node of { HEAD ~ the given pair } of { TAIL ~ connected nodes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL