( 
    (rel 
        (tuple 
            (
                (goodspotid int) 
                (gsaii instant)))) 
    (
        (1 "2000-01-15") 
        (2 "2000-01-15") 
        (3 "2000-01-15") 
        (4 "2000-01-15") 
        (5 undef) 
        (6 undef) 
        (7 undef) 
        (8 "2000-01-15") 
        (9 "2000-01-15") 
        (10 undef) 
        (11 undef) 
        (12 "2000-01-15") 
        (13 "2000-01-15") 
        (14 undef) 
        (15 undef) 
        (16 "2000-01-15") 
        (17 undef) 
        (18 "2000-01-15") 
        (19 undef) 
        (20 "2000-01-15")))