Petrobrazi Refinery
... that the Petrobrazi Refinery owned by Petrom is the most efficient refinery in Romania having a Nelson complexity index of 11.4?
... that the <b id="mw3Q"><a href="./Petrobrazi_Refinery" id="mw3g" rel="mw:WikiLink" title="Petrobrazi Refinery">Petrobrazi Refinery</a></b> owned by <a href="./Petrom" id="mw3w" rel="mw:WikiLink" title="Petrom">Petrom</a> is the most efficient <a href="./Oil_refinery" id="mw4A" rel="mw:WikiLink" title="Oil refinery">refinery</a> in <a href="./Romania" id="mw4Q" rel="mw:WikiLink" title="Romania">Romania</a> having a <a href="./Nelson_complexity_index" id="mw4g" rel="mw:WikiLink" title="Nelson complexity index">Nelson complexity index</a> of 11.4?