[qantas#graph1_on_QF768
     [qantas#QF768,
          pm#from_place: #Melbourne,
          pm#to_place: #Perth,
          pm#departure_time: 11:50,
          pm#arrival_time: 14:00,
          #day_of_the_week: {any pm#workday}]
](15/11/2000);