((trel (tuple ((SName string) (Field string) (Type text) (Value text))))   
(("Aachen" "SName" 'string' 'Aachen') ("Aachen" "Bev" 'int' '239000') ("Aachen" 
"PLZ" 'int' '5100') ("Aachen" "Vorwahl" 'string' '0241') ("Aachen" 
"Kennzeichen" 'string' 'AC') ("Berlin" "SName" 'string' 'Berlin') ("Berlin" 
"Bev" 'int' '1859000') ("Berlin" "PLZ" 'int' '1000') ("Berlin" "Vorwahl" 
'string' '030') ("Berlin" "Kennzeichen" 'string' 'B')))