SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayReduce (children 1)
     ExpressionList (children 3)
      Literal \'simpleLinearRegression\'
      Literal Array_[Int64_-1, Int64_-2, Int64_-3, Int64_-4]
      Literal Array_[Int64_-100, Int64_-110, Int64_-120, Int64_-130]