Currently resource conditions in a nodepath restrict you to a single arc and node pattern, e.g. resource()[arc()/literal() = literal('hello')]. I've relaxed this constraint so that the selection part of the condition can be any arc-matching nodepath. This means that you can now write conditions that test the arcs on a node, e.g. resource()[arc() = resource('http://xmlns.com/foaf/0.1/weblog')] would match any resource with a foaf:weblog property, no matter what the value of that property is, or resource()[arc('http://xmlns.com/foaf/0.1/knows')/resource()/arc() = resource('http://xmlns.com/foaf/0.1/weblog')] that matches any resource that knows a resource with a foaf:weblog.

The new BNF for the spec is:

ResourceCondition            ::= ArcMatchingNodePath [ " = " NodeSpecifier ] 

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