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