In this way, the topology service, based at least in part on connections between nodes in {TAIL ~ the entries} of {HEAD ~ the closure table} and based at least in part on the metadata regarding the topology, may answer queries in regard to the specified topology 
In this way , the topology service , based at least in part on connections between nodes in { TAIL ~ the entries } of { HEAD ~ the closure table } and based at least in part on the metadata regarding the topology , may answer queries in regard to the specified topology
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH