. . . "4" . . . . "1958-08-25" . . "Conc\u00E9ntrese" . . . "1020" . . . . "American version" . . "Concentration (game show)" . . . . "5" . . "Concentration (game show)" . . . . "3770" . "975" . . . . "several game shows" . . . . . "television show of the same name" . . . . "Concentration/Classic Concentration" . . . . . . . . . . . . . . . "''Concentration'' and ''Classic Concentration''" . . . . . . . . "Concentration" . . . . . "Classic Concentration" . . . . . . . . . . . "1560.0" . "15" . . . . . . . . . . . . . . . . . . "''Concentration'' (game show)" . . "Concentation" . . . . . . "1991-09-20" . "Concentration (game show)#Classic_Concentration_(1987\u20131991)" . . . .