ten year series
...that to prepare for future examinations, Singapore students use the ten year series to practice on past years' examination papers, some of which date back to before they were born?
...that to prepare for future <a class="mw-disambig" href="./Examination" id="mwBFM" rel="mw:WikiLink" title="Examination">examinations</a>, <a href="./Singapore" id="mwBFQ" rel="mw:WikiLink" title="Singapore">Singapore</a> students use the <b id="mwBFU"><a href="./Ten_year_series" id="mwBFY" rel="mw:WikiLink" title="Ten year series">ten year series</a></b> to practice on past years' examination papers, some of which date back to before they were <a href="./Childbirth" id="mwBFc" rel="mw:WikiLink" title="Childbirth">born</a>?