@prefix ns1: . @prefix ns2: . @prefix rdfs: . @prefix xsd: . a ns2:Event ; rdfs:label "Boston Symphony Orchestra" ; ns1:conductor ; ns1:orchestra ; ns2:description "symphony orchestra performance", "tribute" ; ns2:location ; ns2:organizer ; ns2:startDate "1938-02-12T15:00:00"^^xsd:dateTime ; ns2:subEvent , , , , ; rdfs:comment "Program in memory of composer Maurice Ravel, March 7, 1875--December 28, 1937" .