One SEO professional asked John Mueller about rich snippets that are showing up in a different language, during the Question and Answer segment of a recent hangout.
Their situation was they have a hotel that shows microformats (a form of embedding structured data within HTML code that results in a rich snippet) in a different language than the organic results.
And their main question: how can they make these rich results show in the same language?
John answered that it’s possible the structured data on the SEO professional’s site is in that language, and that’s what Google is picking up.
This happens at approximately the 35:43 mark in the video.