<?xml version="1.0" encoding="utf-8" ?>

<Orders xmlns="http://www.xml.com">

  <Order Id="1" Supplier="Company A" Type="Purchase">

    <OrderItems catalog="A">

      <Item>1<Item>

      <Item>2</Item>

      <Item>3</Item>

    </OrderItems>

    <OrderItems catalog="B">

      <Item>1<Item>

      <Item>2</Item>

      <Item>3</Item>

    </OrderItems>

  </Order>

<Order Id="2" Customer="Company B" Type="Sales">

    <OrderItems>

      <Item>2</Item>

    </OrderItems>

  </Order>

</Orders>