Look at the extract (extract_html also) field returned by this call : https://en.wikipedia.org/api/rest_v1/page/summary/Jealousy

At the moment it is the following string : "{{Use dmy dates|dateresentment, inadequacy, helplessness or disgust. In its original meaning, jealousy is distinct from envy, though the two terms have popularly become synonymous in the English language, with jealousy now also taking on the definition originally used for envy alone."
which really looks bogus in the beginning.

It's easily spottable by going to go to https://en.wikipedia.org/wiki/Emotion for example and pointing the "Jealousy" link in the template.