XPATH mulitple condition to exclude some elements - xpath

Question

I would like to parse schema data using XPATH.
Here's a simple structure.
<div itemscope itemtype="http://www.schema.org/Product">
<div itemscope itemtype="http://www.schema.org/Person">
<span itemprop="birthday" datetime="2009-05-10">May 10th 2009</span>
</div>
<div itemprop="name"> Product name </div>
<div itemprop="offers" itemscope itemtype="https://schema.org/Offer">
<span itemprop="price" content="500.00"> USD 500 </span>
</div>
</div>
The result I would like to parse is like this:
1. Category: http://www.schema.org/Product
v name: Product name
v Offers
- price: USD 500
2. Category: http://www.schema.org/Person
v birthday: May 10th 2009
To categorize "http://www.schema.org/Product" and "http://www.schema.org/Person", I used this code:
var category = $x("//*[#itemtype and not(#itemprop)]");
So category[0]:
<div itemscope itemtype="http://www.schema.org/Product">
<div itemscope itemtype="http://www.schema.org/Person">
<span itemprop="birthday" datetime="2009-05-10">May 10th 2009</span>
</div>
<div itemprop="name"> Product name </div>
<div itemprop="offers" itemscope itemtype="https://schema.org/Offer">
<span itemprop="price" content="500.00"> USD 500 </span>
</div>
</div>
Category[1]:
<div itemscope itemtype="http://www.schema.org/Person">
<span itemprop="birthday" datetime="2009-05-10">May 10th 2009</span>
</div>
Before parsing itemprop, I have to purge this one on category[0] to prevent duplicated data,
...
<div itemscope itemtype="http://www.schema.org/Person">
<span itemprop="birthday" datetime="2009-05-10">May 10th 2009</span>
</div>
...
How can I exclude those things on category[0]?
I would like to exclude this one under category[0]->
Final expression I would like to make:
Select category[0] not select ([contains(#itemtype,'schema.org/') and not(#itemprop)]/descendant-or-self::*)
Please shed light on the matter.
Thank you:)