Mo Tae-Bum
... that Mo Tae-Bum, a South Korean long track speed skater, won a 2010 Olympic gold medal on his 21st birthday?
... that <b id="mwB38"><a class="mw-redirect" href="./Mo_Tae-Bum" id="mwB4A" rel="mw:WikiLink" title="Mo Tae-Bum">Mo Tae-Bum</a></b>,  a <a href="./South_Korea" id="mwB4E" rel="mw:WikiLink" title="South Korea">South Korean</a> <a class="mw-redirect" href="./Long_track_speed_skating" id="mwB4I" rel="mw:WikiLink" title="Long track speed skating">long track speed skater</a>, won a <a href="./2010_Winter_Olympics" id="mwB4M" rel="mw:WikiLink" title="2010 Winter Olympics">2010 Olympic</a> <a href="./Gold_medal" id="mwB4Q" rel="mw:WikiLink" title="Gold medal">gold medal</a> on his 21st birthday?