integrating the characters in the foreground 
(ROOT (S (VP (VBG integrating) (NP (NP (DT the) (NNS characters)) (PP (IN in) (NP (DT the) (NN foreground)))))))
(ROOT (S (VP (VBG ) (NP (NP (DT ) (NNS )) (PP (IN ) (NP (DT ) (NN )))))))