知道如何使用schema.org微数据为当地企业的邮政地址标记楼层号码吗?
<div itemscope itemtype="http://schema.org/LocalBusiness">
<span itemprop="legalName">Company Limited</span>
<div itemprop="address" itemscope itemtype="http://schema.org/PostalAddress">
<div itemprop="streetAddress">Billy Street 100</div>
<div>10th Floor</div>
<div><span itemprop="addressLocality">Paris</span>,
<span itemprop="addressRegion">TX</span>
<span itemprop="postalCode">75462</span></div>
<div itemprop="addressCountry">United States</div>
</div>
</div>
另外,上面的标记是语义的吗?
如果没有楼层号,我应该使用RDFa吗?