a long-standing ban on blackcurrant production
... that purple Skittles are grape-flavored in the United States because of a long-standing ban on blackcurrant production?
... that purple <a href="./Skittles_(confectionery)" id="mwA9w" rel="mw:WikiLink" title="Skittles (confectionery)">Skittles</a> <i id="mwA90">(assortment pictured)</i> are grape-flavored in the United States because of <b id="mwA94"><a href="./Blackcurrant_production_in_the_United_States" id="mwA98" rel="mw:WikiLink" title="Blackcurrant production in the United States">a long-standing ban on blackcurrant production</a></b>?