PREFIX prov: <http://www.w3.org/ns/prov#> 
PREFIX wfdesc: <http://purl.org/wf4ever/wfdesc#> 
PREFIX wfprov: <http://purl.org/wf4ever/wfprov#> 
PREFIX tavernaprov: <http://ns.taverna.org.uk/2012/tavernaprov/>
PREFIX cnt:  <http://www.w3.org/2011/content#> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX wf4ever: <http://purl.org/wf4ever/wf4ever#> 


SELECT DISTINCT ?paramName ?name ?value ?ended ?script
WHERE {
    ?greeting tavernaprov:content <outputs/greeting.txt> .
    ?greeting prov:wasGeneratedBy ?concatenate .
    ?concatenate prov:endedAtTime ?ended ;
        wfprov:wasPartOfWorkflowRun ?run ;
	wfprov:describedByProcess ?plan .
    ?concatenate wfprov:usedInput ?input .
    ?input tavernaprov:content ?name .
    OPTIONAL { ?name cnt:chars ?value }  .
    OPTIONAL { ?plan wf4ever:script ?script } .
    ?input wfprov:describedByParameter ?param .
    ?plan wfdesc:hasInput ?param .
    OPTIONAL { ?param rdfs:label ?paramName } .  
}