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Def recognizer1(loc;T;A;P;k;i;r;x)
Def == if loc = i Def == if [r : initially r = false;
Def == if [only members of [k] affect r :;
Def == if [ma-single-effect1(r;;x;A;k;T;r,x,v. P(x,v) r)]
Def == else nil fi