World Access for the Blind
... that the World Access for the Blind has helped over 7,000 blind people to use human echolocation?
... that the <b id="mwDbI"><a href="./World_Access_for_the_Blind" id="mwDbM" rel="mw:WikiLink" title="World Access for the Blind">World Access for the Blind</a></b> has helped over 7,000 blind people to use <a href="./Human_echolocation" id="mwDbQ" rel="mw:WikiLink" title="Human echolocation">human echolocation</a>?