Please remain quiet.
( Please ( ( remain quiet ) . ) )
(ROOT (S (INTJ (UH Please)) (VP (VB remain) (ADJP (JJ quiet))) (. .)))
Please don't speak for ten minutes.
( Please ( ( ( do n't ) ( speak ( for ( ten minutes ) ) ) ) . ) )
(ROOT (S (INTJ (UH Please)) (VP (VB do) (RB n't) (VP (VB speak) (PP (IN for) (NP (CD ten) (NNS minutes))))) (. .)))