Takes quad and tries to build the quality metadata
with the quad information available
The approach taken to build the temporary graph object
is a poor man's approach, keeping in mind the following:
1) If the passed quad contains the triple "?x a DAQ.QualityGraph" then
be can create a new TemporaryGraphMetadataCacheObject with the subject
resource as the Graph URI
2) Since a quad might contain the GRAPH URI in its fourth (context) element,
then:
a) first check if the TemporaryGraphMetadataCacheObject is created and
if so, check if the context element (in the quad) is the same as defined
as the Graph URI of the java object.