found in almost all of his previous works 
(ROOT (S (VP (VBN found) (PP (IN in) (NP (NP (QP (RB almost) (DT all))) (PP (IN of) (NP (PRP$ his) (JJ previous) (NNS works))))))))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (NP (QP (RB ) (DT ))) (PP (IN ) (NP (PRP$ ) (JJ ) (NNS ))))))))