SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function dictGetOrDefault (children 1)
     ExpressionList (children 4)
      Literal \'polygon_dictionary\'
      Literal \'array_value\'
      Function tuple (children 1)
       ExpressionList (children 2)
        Literal Float64_1.5
        Literal Float64_1.5
      Literal Array_[UInt64_2, UInt64_3, UInt64_4]
