<http://schema.org/headline>
"it was raining yesterday, it's been raining today, it will probably be raining tomorrow"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.photoblog.com/nychthemeron/2010/05/29/it-was-raining-yesterday-its-been-raining-today-it-will-probably-be-raining-tomorrow/>