<http://schema.org/caption>
"This is photo #1 of the sequence. It shows a F3 Oklahoma City tornado forming while another circulation was beginning to form as well on May 3, 1999."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4029tv.com/article/majestic-monsters-tornadoes-captured-over-the-years/4913336>