Bihari culture
... that Hindi is the language used for educational and official matters in Bihari culture?
... that <a href="./Hindi" id="mwGlc" rel="mw:WikiLink" title="Hindi">Hindi</a> is the language used for educational and official matters in <b id="mwGlg"><a href="./Bihari_culture" id="mwGlk" rel="mw:WikiLink" title="Bihari culture">Bihari culture</a></b>?