retired the uniform numbers of only six players
... that since their founding in 1919, the Green Bay Packers have retired the uniform numbers of only six players?
... that since their founding in 1919, the <a href="./Green_Bay_Packers" id="mwA-A" rel="mw:WikiLink" title="Green Bay Packers">Green Bay Packers</a> have <b id="mwA-E"><a href="./List_of_Green_Bay_Packers_retired_numbers" id="mwA-I" rel="mw:WikiLink" title="List of Green Bay Packers retired numbers">retired the uniform numbers of only six players</a></b>?