For example, a topology service may be implemented within {HEAD ~ a virtual computing environment}, which may in {TAIL ~ turn} include virtual computing instances 
in
For example , a topology service may be implemented within { HEAD ~ a virtual computing environment } , which may in { TAIL ~ turn } include virtual computing instances
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH