<http://schema.org/alternativeHeadline>
"While giant sequoias have evolved to withstand frequent forest fires, the current wildfire is spreading from the treetops, posing a new challenge."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/giant-sequoia-trees-threatened-by-yosemite-fire>