@prefix ns1: . @prefix ns2: . @prefix rdfs: . @prefix xsd: . a ns1:Event ; rdfs:label "Boston Symphony Orchestra" ; ns2:conductor ; ns2:orchestra ; ns1:description "symphony orchestra performance" ; ns1:location ; ns1:organizer ; ns1:startDate "1995-04-27T20:00:00"^^xsd:dateTime ; ns1:subEvent , , ; rdfs:comment "Pianist Maria Tipo, originally scheduled to perform the Schumann Piano Concerto, was unable to appear due to her retirement from the concert stage; Imogen Cooper performed in her place." .