[graph1_on_QIF3718
     [QIF3718,
          from_place: London_Gatwick,
          to_place: Frankfurt_on_the_Main,
          departure_time: 19:15,
          arrival_time: 21:55,
          day_of_the_week: {the Monday,the Wednesday,the Friday,the Sunday}]
](28/02/2001);