number-one single
... that Al Martino had the first ever number-one single in the United Kingdom?
... that <a href="./Al_Martino" id="mwApE" rel="mw:WikiLink" title="Al Martino">Al Martino</a> had the first ever <b id="mwApI"><a class="mw-redirect" href="./List_of_top_12_singles_in_1952_(UK)" id="mwApM" rel="mw:WikiLink" title="List of top 12 singles in 1952 (UK)">number-one single</a></b> in the <a href="./United_Kingdom" id="mwApQ" rel="mw:WikiLink" title="United Kingdom">United Kingdom</a>?