(select
 (bgp
   (triple <http://placetime.com/interval/gregorian/1977-01-18T04:00:00Z/P1D>
           |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:type
           <http://www.ai.sri.com/daml/ontologies/time/Time.daml#ProperInterval>)
   (triple <http://placetime.com/interval/gregorian/1977-01-18T04:00:00Z/P1D>
           <http://purl.org/dc/elements/1.1/description> ?::desc))
 (?::desc))