# Query Name : query7 # Query Type: 7, Cross-delta structured queries (queries performed on changes of several versions (multiple deltas)) # Query Description : # Retrieve the average number of added News Items from one version to another between versions Vi and Vj. PREFIX cwork: SELECT ((?ViPlus1_news_items_added + {{{intermediateCounts}}} ?Vj_news_items_added) / {{{graphsRange}}} AS ?avg_added_news_items) WHERE { { SELECT (COUNT(*) AS ?ViPlus1_news_items_added ) WHERE { GRAPH {{{graphViPlus1}}} { ?creativeWork a cwork:NewsItem } MINUS { GRAPH {{{graphVi}}} { ?creativeWork a cwork:NewsItem } } } } . {{{nestedSelectNewsItemsCount}}} { SELECT (COUNT(*) AS ?Vj_news_items_added) WHERE { GRAPH {{{graphVj}}} { ?creativeWork a cwork:NewsItem } MINUS { GRAPH {{{graphVjMinus1}}} { ?creativeWork a cwork:NewsItem } } } } . }