general, points and king of the mountains classifications
... that Belgian cyclist Eddy Merckx is the only person to have won the general, points and king of the mountains classifications in the same tour?
... that <a href="./Belgium" id="mwB5o" rel="mw:WikiLink" title="Belgium">Belgian</a> <a href="./Cycling" id="mwB5s" rel="mw:WikiLink" title="Cycling">cyclist</a> <a href="./Eddy_Merckx" id="mwB5w" rel="mw:WikiLink" title="Eddy Merckx">Eddy Merckx</a> is the only person to have won the <b id="mwB50"><a href="./List_of_Tour_de_France_general_classification_winners" id="mwB54" rel="mw:WikiLink" title="List of Tour de France general classification winners">general, points and king of the mountains classifications</a></b> in the same tour?