forgotten 10 minutes after the last trombone 
(ROOT (VP (VBN forgotten) (PP (NP (CD 10) (NNS minutes)) (IN after) (NP (DT the) (JJ last) (NN trombone)))))
(ROOT (VP (VBN ) (PP (NP (CD ) (NNS )) (IN ) (NP (DT ) (JJ ) (NN )))))