adapted the  select for proposal query for open proposes by omitting
some of the select variables.
@@ -4,7 +4,7 @@ PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX msg: <http://purl.org/webofneeds/message#>
PREFIX won: <http://purl.org/webofneeds/model#>
- SELECT ?openprop ?openclause ?openp ?openo WHERE {
+ SELECT ?openprop ?openclause WHERE {
filter (?openprop = ?prop) .
# filter (?openclause != ?clause) .
