longest life expectancy in the U.S.
... that residents of three adjacent counties in the Rocky Mountains of Colorado have the longest life expectancy in the U.S.?
... that residents of three adjacent counties in the <a href="./Rocky_Mountains" id="mwBNM" rel="mw:WikiLink" title="Rocky Mountains">Rocky Mountains</a> of Colorado have the <b id="mwBNQ"><a href="./List_of_U.S._counties_with_longest_life_expectancy" id="mwBNU" rel="mw:WikiLink" title="List of U.S. counties with longest life expectancy">longest life expectancy in the U.S.</a></b>?