schema.org markup examples

[Britches]

I'm try to add schema.org markup to my HTML. Specifically, I want to markup some events, as per these examples. Although these examples are helpful, they are also somewhat incomplete, e.g. the use of the performer/performers properties is not demonstrated.Also, in these examples the root element containing schema.org markup node is always a \[code\]<div>\[/code\]\[code\]<div itemscope itemtype="http://schema.org/Event"> <a itemprop="url" href="http://stackoverflow.com/questions/14622868/nba-miami-philidelphia-game3.html"> ...</div>\[/code\]is this actually a requirement, or can I use any HTML element as the schema.org root, e.g.\[code\]<tr itemscope itemtype="http://schema.org/Event"> <a itemprop="url" href="http://stackoverflow.com/questions/14622868/nba-miami-philidelphia-game3.html"> ...</tr>\[/code\]