Mothers Against Drunk Driving
Mothers Against Drunk Driving ( MADD ) is a nonprofit organization in the United States , Canada and Brazil that seeks to stop drunk driving , support those affected by drunk driving , prevent underage drinking , and strive for stricter impaired driving policy , whether that impairment is caused by alcohol or any other drug . 
<triplet> Mothers Against Drunk Driving <subj> nonprofit organization <obj> instance of