number-one album in Japan
... that last year, Perfume was the first technopop group since Yellow Magic Orchestra to have a number-one album in Japan?
... that last year, <a class="mw-redirect mw-disambig" href="./Perfume_(group)" id="mwCTM" rel="mw:WikiLink" title="Perfume (group)">Perfume</a> was the first <a class="mw-redirect" href="./Technopop" id="mwCTQ" rel="mw:WikiLink" title="Technopop">technopop</a> group since <a href="./Yellow_Magic_Orchestra" id="mwCTU" rel="mw:WikiLink" title="Yellow Magic Orchestra">Yellow Magic Orchestra</a> to have a <b id="mwCTY"><a class="mw-redirect" href="./List_of_number-one_albums_of_2008_(Japan)" id="mwCTc" rel="mw:WikiLink" title="List of number-one albums of 2008 (Japan)">number-one album in Japan</a></b>?