SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function and (children 1)
     ExpressionList (children 2)
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Function filesystemCapacity (children 1)
         ExpressionList (children 1)
          Literal \'s3_disk\'
        Function filesystemAvailable (children 1)
         ExpressionList (children 1)
          Literal \'s3_disk\'
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Function filesystemAvailable (children 1)
         ExpressionList (children 1)
          Literal \'s3_disk\'
        Function filesystemUnreserved (children 1)
         ExpressionList (children 1)
          Literal \'s3_disk\'
