This code sample is adapted from Clifford B. Anderson and Joseph C. Wicentowski, XQuery for Humanists (College Station: Texas A&M University Press, 2020), 236. Download this code sample in its raw form. View the source on GitHub.
xquery version "3.1"; declare namespace tei="http://www.tei-c.org/ns/1.0"; declare variable $shells := "She sells sea-shells on the sea-shore. The shells she sells are sea-shells, I'm sure. For if she sells sea-shells on the sea-shore Then I'm sure she sells sea-shore shells."; $shells contains text "shells" occurs at least 2 times