@relation toy

 @attribute id {bag1,bag2}
 @attribute bag relational
   @attribute f1 numeric
   @attribute f2 numeric
   @attribute f3 numeric
 @end bag
 @attribute label1 {0,1}
 @attribute label2 {0,1}
 @attribute label3 {0,1}
 @attribute label4 {0,1}
 
 @data
 bag1,"42,-198,-109\n41.9,-191,-142\n35,14.2,6.33",1,0,0,1
 bag2,"11.25,-98,10\n31,40.5,7.85",0,1,1,0