There should be someone here who knew more of what was going on in this world than he did now.
( There ( ( should ( be ( ( someone here ) ( who ( knew ( more ( of ( what ( was ( ( ( going on ) ( in ( this world ) ) ) ( than ( he ( did now ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (MD should) (VP (VB be) (NP (NP (NN someone)) (ADVP (RB here)) (SBAR (WHNP (WP who)) (S (VP (VBD knew) (NP (NP (JJR more)) (PP (IN of) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG going) (PRT (RP on)) (PP (IN in) (NP (DT this) (NN world))) (SBAR (IN than) (S (NP (PRP he)) (VP (VBD did) (ADVP (RB now))))))))))))))))) (. .)))
He knew he was the only person with any idea of what was going on. 
( He ( ( knew ( he ( was ( ( the ( only person ) ) ( with ( ( any idea ) ( of ( what ( was ( going on ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD knew) (SBAR (S (NP (PRP he)) (VP (VBD was) (NP (NP (DT the) (JJ only) (NN person)) (PP (IN with) (NP (NP (DT any) (NN idea)) (PP (IN of) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBG going) (PRT (RP on)))))))))))))) (. .)))