#data
<p itemscope="" itemtype="http://data-vocabulary.org/Offer" xmlns="http://www.w3.org/1999/xhtml"><span itemprop="currency">usd</span></p>
#errors

#data
<p itemscope="" itemtype="http://data-vocabulary.org/Offer" xmlns="http://www.w3.org/1999/xhtml"><span itemprop="currency">EUR</span></p>
#errors

#data
<p itemscope="" itemtype="http://data-vocabulary.org/Offer" xmlns="http://www.w3.org/1999/xhtml"><span itemprop="currency">Jp</span></p>
#errors
/p/span;currency:not registered;m