Question: about simplification

consider:

assume(kf2>0,q<kf2,q>0);

 

(PIECEWISE([0, -ln(q)+ln(kf2) < 0],[1, otherwise]));

 

simplify(PIECEWISE([0, -ln(q)+ln(kf2) < 0],[1, otherwise]));

 

i think i shall get 1 after the simplification... but i cannot...what should i do to achieve that "simplification"

 

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