Triplematcher with bound subject, predicate, object return 0 triples even though triple exists when querying tupeloserver.

Output from tcpmon

POST /tupelo/tupelo?method=MQUERY&syntax=sparql HTTP/1.1
Authorization: Basic dHVwZWxvOnR1cGVsbw==
User-Agent: Jakarta Commons-HttpClient/3.0.1
Host: localhost:8080
Content-Length: 306

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX cet: <http://cet.ncsa.uiuc.edu/2007/> CONSTRUCT

{ <cet:workflow/tool/3e866fb5-f09f-4839-821b-bbad57629718> <rdf:type> <cet:workflow/Tool> . }

WHERE

{ <cet:workflow/tool/3e866fb5-f09f-4839-821b-bbad57629718> <rdf:type> <cet:workflow/Tool> . }